“Are you coming out Aubrey?” I heard my older brother Max yell as he ran down the hall. I could hear his friend Johnny outside acting like the idiot he was so part of me didn’t really want to go out. But it was also hot and I was bored and it was my pool too so… “Yeah; I’ll be out in a minute” I yelled back.

I got up from the couch and set aside my copy of Harry Potter and the Chamber of Secrets to go up to my room and change.

Johnny had lived at our house all summer since we had gotten the pool put in; it was kind of annoying having to share a pool with two 13 year olds. My brother was usually enough for me.

I pulled out my bathing suit; it was a girl’s size 12 one piece; my Mom said I was too young to wear a two piece…but anyway it’s pink and yellow and put it on.

I pulled my long blonde hair back into a ponytail; yeah I call it blonde even though I really don’t know what color it is. It’s brownish blonde I guess and I hope it picks a color as I get older.

As I came to the back door, I heard a different voice by the pool “Johnny! If you splash me one more time, I swear to God I’m going to kick your ass you little jerk!”

I smiled at the thought as I stepped out “Oh Hello you must be Max’s little sister”

“Uh Yeah” I replied to the very tall and very pretty woman standing before me “I’m Aubrey”

“I’m Victoria; I’m Johnny’s older sister…it’s nice to meet you Aubrey” she said as she tied her dark brown hair up into a top knot “I hope you don’t mind that I came over today; our Moms talked and said it was okay”

“Oh I don’t care at all” I replied “In fact I’m just glad that there’s someone else here to help me put up with these two jerks”

“Ha Ha…too true” Victoria replied. “I’m just lucky I’m older than Johnny, I can’t imagine what you must go through being a younger sister; you must get picked on mercilessly”

I rolled my eyes trying to look cool “You have no idea” I said crossing my arms over my chest and sighing.

Victoria tightened the strings of her bikini top at her neck and back “You can call me Tori by the way”

I just smiled.

“How old are you Aubrey?” she asked me as she kicked off her sandals and unfolded her towel.

“I’m 10” I answered.

“Hey…I’m 20! We’re like one of the story problems in school…Tori is twice as old as Aubrey…” she laughed and so did I.

“Do you go to Newton Elementary?” Tori asked.

“Yeah” I replied.

“I went there too; is Mrs. Martin still teaching?”

“I had her last year!” I answered.

“She was my favorite teacher…3rd grade…” Tori said obviously remembering.

“What do you do now? Are you in college?” I asked trying to keep the conversation going.

“Yeah…I’m studying communications and journalism at Columbia” she responded casually.

“Are you kidding me?! That’s exactly what I want to study and where I want to go! I want to be a writer!” I gushed.

“Well I hope you make it there! No…in fact, I know you’ll make it there” Tori said.

I looked up at her and thought “She is living my dream life! But I doubt I’ll be that pretty when I get there” Tori was gorgeous; she filled out her bikini and had a pretty face with big brown eyes.

We were standing on the deck around the pool about to get in when we heard Max and Johnny start to run. I turned in time to see Johnny coming up. He stopped right behind his big sister and put his hands on her back.

“Hey!” she yelled out as she braced herself. She bent down flexing at her knees and Johnny’s shove only moved her about 6 inches forward but failed to push her into the water like he wanted.

Max however.

Max’s hands hit me in my back and the next thing I knew, I was under.

I sucked in a deep breath as I fell in but water still shot up my nose. Bubbles were everywhere as my arms and legs kicked and pushed me back to the surface.

I spit water out and blinked several times noticing a lot of commotion. Tori was chasing both of them around the pool with a pissed off look on her face.

She finally caught Johnny by the shoulder and in a single motion whipped him into the water.

Max had stopped just long enough to laugh at his friend that when Tori took off again, she closed the distance on him and caught him too.

“Wait…wait…” he managed to plead before she shoved him in as well.

I had found my new hero.

Tori bent forward as the two boys broke the surface and tread water “Pick on someone your own size next time” then she did a cannonball in between them just to prove her point and get them even wetter.

She made sure to kick extra hard and make yet another splash in their faces as she swam over to me on the other side of the pool.

“That was awesome!” I told her.

She just smiled and bobbed her head “You’re welcome…sometimes you need someone older looking out for you” She grabbed the side of the pool and kicked her feet slowly underwater “You’d do the same for me if our roles were reversed”

“You bet I would” I replied.

“I wouldn’t want my brother picking on me” she continued “And if he did, I’d want someone sticking up for me”

“So you’re the oldest?” I asked.

Tori nodded. “Yeah and with there being 7 years between me and Johnny, I’ve never picked on him. My parents went nuts on me when he was little the few times I did”

I was smiling when I heard Johnny say to Max “Damn dude…wish I had a little sister instead of an older one”

They were getting out of the pool and drying off “Let’s go play Fortnite” Max yelled as they ran into the house, slamming the sliding door behind them.

Tori lifted herself up and sat on the deck with just her feet dangling in the water ringing out her hair. “Did they just lock us out?” she asked me as I used the ladder to climb out.

“No…the back door is unlocked too” I answered grabbing my towel.

“Good” she said running her hand over her bare stomach “My stomach’s not feeling good…it just started here a second ago when I got out of the water”

“Maybe you swallowed too much when you jumped in” I suggested.

“Maybe” she shrugged and swung her feet out of the water. She grabbed her towel and dried off “I think I’ll just lay out in the sun and relax for a little bit” she added as she tugged on her bikini bottom. It looked a little loose and saggy on her.

I was glad she had her back to me because I had to dig at my suit; it had ridden up my butt coming out of the water; my suit felt tight and I knew what my Mom would tell me “It’s August, just wear it until the end of the season and we’ll get you a new one next year”

As I stood there dripping wet with my towel in front of me I watched Tori as she leaned down drying off her legs.

All of a sudden, she shot straight up, dropped her towel and grabbed her top. She spun around towards me holding it up with her arms “Did you see that? I almost lost my top!” her big brown eyes were wide with shock. She looked down fiddling with her top “This thing felt tight on me when I put it on…” she said to herself.

I just shrugged but as I was looking at her, her body seemed to shimmer and waver. I blinked thinking I had water in my eyes and when I refocused on her, somehow; she looked smaller to me; shorter.

I took a step forward and my suit shot up, riding up over my hips and right up my butt. I also stuck my thumbs under my shoulder straps which were digging in.

I hunched over and grimacing, slipped the straps off my shoulders which allowed me to stand all the way back up.

I was just a few feet away from her, something was up “How tall are you?” I asked.

“I’m 5’8” she answered looking up from her loose top.

“No way you’re 5’8” cause I’m only like 4’8” I said sizing her up. She was taller than me, but not a whole foot taller.

“No…I swear I’m 5’8”…it’s even on my driver’s license” she replied but she was scanning me up and down as she said it.

We both took a dramatic step backwards away from each other as my mind started to reel. My tight suit, her loose suit; was she shrinking or was I growing or both.

I saw a bit on panic on Tori’s face. Her eyes were wide and her mouth trembled bit “What the hell?” she finally said looking at me.

“Ugh” I let out a quick word of discomfort as my chest started to ache. I brought my hand up and rubbed the small bumps there.

Wait a second. Bumps. Growing bumps!

“Ah!” I let out a quick scream.

“Ah!” Tori let out her own scream as her top slipped again. I saw it droop suddenly; it just dropped down and I saw Tori’s boobs.

They were small and almost cone shaped; not at all what they had looked like when I had first seen her standing on the deck adjusting the strap at her neck. She had filled up her bikini then; now, she didn’t.

I examined Tori and noticed so many things different; it was so weird. She was shorter, her hips were narrower, her boobs smaller and her face…that was when it hit me.

“You look younger!” I told her.

Tori’s jaw dropped at my words. She scanned me up and down before telling me “You look older!”

“What?!” I jumped, my hands swatted at my body.

“You’ve got hips!” she stammered “And...And your legs…” I noticed her eyes lingering on my thighs so I looked down and thought they looked bigger; rounder. I wrapped my hands around my right thigh and my fingers couldn’t touch.

“And you’ve got breasts! No 10 year old has breasts like that?!” Tori announced.

I looked down and the bumps had grown into full breasts, pushing my tiny suit out and down “Oh God” I said as I grabbed the front of my suit and yanked it up as much as I could.

The ground looked further away from my eyes. My feet tapped around nervously in the small puddle I had created with my dripping. My feet were growing larger too.

“But what do you mean I look younger?!” Tori spat out “Oh shit!” she added taking a step backwards “Ah…oh God!” she splayed her hands out in front of her, her bikini hanging off her neck.

She looked at her legs as they slimmed down and lost their round fullness right before her eyes. “This is impossible...this can’t be happening” Her head craned around swinging left and right as she watched her hips and ass slim down, deflating, and losing mature curves.

I watched it too even as I also kept looking down at my own body changing. It tickled. I remember a tingling, chilling sensation running over my skin as my body grew and changed.

My hips flared out and my ass grew big and round as I aged. My face was also prickly this whole time. My lips went numb and my cheeks and forehead itched. My nose swelled up in the corner of my vision.

I looked over at Tori and she was shrinking pretty fast now. She barely had any signs of puberty left as she went through a rapid shrinking spurt which was obviously reversing when she had her growth spurt. She looked about 12 as her facial features continued to soften and round off more childlike with each passing moment.

We both realized I was taller at the same moment. Her jaw dropped again and I could see that her teeth had changed. They were no longer straight as her mouth hung open as her head ran me up and down from my toes to my head.

I knew my jaw was hanging open too as she couldn’t have been any taller than 5 feet after her downward spurt. I didn’t think I was as tall as Tori had been but I was definitely the larger one of us. I felt bigger and stronger; I was wider…my shoulders were up, I was developed “I’m bigger than Max”

Tori went pale white “I’m younger than John…he’s my older brother now…I’m the little sister and you’re a big sister”

Our eyes met; her big brown ones looked fearful, her nose pulled up even slightly smaller and her lips thinned a bit more under her big round cheeks as her looks seem to solidify.

That was when her suit shrank.

Her empty bikini cups hung down when in a flash they suctioned back to her flat chest and body and drew down. Her baggy bottoms shot back in a single puckering motion to cover her much more diminutive figure. A slip of skin could be seen across her belly as it had turned into a tankini on the now pre-pubescent girl.

I felt my suit give way and I quickly grabbed my shoulder straps. They were thinning down to spaghetti straps but I got them up in time as the top half of my suit separated and lifted into a pink and yellow bikini top cupping my new 36C breasts. The remainder of my suit flared out into a matching bikini bottom that hugged my ample cheeks.

“Oh my god Tori…we swapped ages” I said in a deeper voice “I’m 20 and you’re 10!”

“What?!” Tori replied in a voice higher than mine at that age as she once again looked at her own diminished stature and my newly obtained physique. “No! I can’t be a 10 year old…I’m not! I’m 20…I’m in college damn it!”

“Oh my God…this is crazy” I said taking in my body. My legs were so long…I had hips and an ass that I grabbed and squeezed. I pointed my big toe; which was much bigger in and of itself taking in the line of my leg and foot “I’m grown up; I just grew up in a matter of seconds…I doubled my age because you halved yours”

“Give it back! I didn’t say you could switch ages with me…what the heck?! How did this happen? This can’t happen!” I saw her spinning around taking in her new body, or, rather I guess, her old body; as she had looked like this before.

“I never asked for this! I had nothing to do with this Tori! I’m just as shocked as you are!”

“But you’re getting everything! I’m getting screwed!” she yelled out and stomped her foot making a splash in the puddle at her feet.

“I don’t know what to tell you!” I replied.

“Hmpfh!” she folded her arms over her flat chest “Why did our suits change?” she asked, her face drawn in and mad looking.

“Oh…um…” I looked down at the bikini I was wearing and filling out quite well “I have no idea…maybe just to spare us the embarrassment of me busting out of mine and yours falling off”

“Ha Ha…very funny Aubrey” she said sarcastically. “I’m serious!”

“So am I…I…” just then the sliding glass door opened and our brothers came running out.

I saw Tori go white and stagger a step backwards in abject fear. “It’ll be okay” I tried to reassure her.

“Nuh…no it won’t” she hissed at me as they screwed around on the patio not paying any attention to us yet. “They are going to freak out when they see us like this! I’ll never hear the end of it! Johnny will tease me mercilessly forever!”

“Quit overreacting and being so dramatic” I said.

“Hello! I just got turned into a 10 year old Aubrey! I think this is the perfect time to panic!”

I shook my head “No…what I mean is…what if they don’t think anything is wrong?”

“What?!” What are you talking about you’re not making any sense?” Tori said.

“The suits. Why did our bathing suits change on us? I’m thinking it’s because reality changed when we did and now I’ve always been Max’s older sister and you’ve always been Johnny’s younger one” I said.

Tori’s jaw dropped.

I just nodded in return and smiled. I walked to the edge of the deck and yelled out “Hey!”

They both stopped and looked over at me.

“What’s up Aubrey?” Max asked.

I turned to Tori and smirked “Nothing…I was just making sure you two knuckleheads were listening”

Max just smiled but Johnny seemed to blush and turn away. I saw Max say something but I couldn’t hear it and then Johnny shoved him and said through gritted teeth “Shut up Man!”

Max ran our way with a huge smile on his face and Johnny chased him “If you do you’re dead!” he yelled.

Max stopped at the foot of the stairs and turned around “I’m just messing with you man…chill!”

Johnny still looked red in the face and he wouldn’t make eye contact with me as he rushed past.

Tori was so in shock she was holding her breath as they came up.

“Hey Tori, you doing alright” Johnny asked. “You look cold…are you feeling okay?”

Tori just stared.

Johnny waved his hand in front of her face “Earth to Tori”

She finally snapped to it “What?! You don’t see a problem here?”

Johnny looked confused “No…” he shook his head. “I was checking on you. I saw you and Aubrey out here having a good time…ease up little sis and enjoy the pool”

He tapped her on the shoulder in a playful way and jumped back in the water. He and Max swam around playing like usual.

Tori was stunned. Her jaw dropped again. She turned and walked up to me barely coming up to my chin now. “What the heck is going on?!” she said in a whisper to me “Are we the only two who realize what just happened to us?!”

I slowly nodded “I think so”

Our eyes met and that’s when I felt a sharp pain rock through my head. I put my hands to my temples and pressed down. I heard a high pitched scream shoot through my head but only for a flash. There was a ringing that persisted afterwards.

I took a step backwards and came up shaking my head. I saw Tori doing the same thing and when our eyes met this time; it was different.

“Oh…” she said looking in my eyes. “Oh no…”

I instantly understood her and what she was going through and what she was upset about. “Did we…” I stopped and searched my mind. It was running in high gear processing loads and loads of information and knowledge that I had just felt dump in; 10 years of it to be precise.

Tori just nodded. We had just transferred something much more than our ages.

“I’m 10…I’m really 10” she said “I have the body, mind and consciousness of a 10 year old. Even though I know what just happened to us, everything in my soul is telling me that I’m 10 now”

I realized how much my mind had expanded. Middle school, high school and 2 years of college were now mine. I could drive, I owned a car, I had a room at the Sorority House on campus, Max was my younger brother I remember holding him as a baby when I was 7.

“And I’m 20” I said to her.

She stomped past me and sat down in a huff in one of the deck chairs. She put her little skinny legs up and crossed her tiny ankles and stared into the pool. I sat down next to her and didn’t even realize I was sitting like her. My legs stretched out longer, but crossed at the ankles.

I didn’t know what to say but I could tell she was squirming and starting to fidget next to me. She sat up and put her legs to the side.

I turned and watched as she stood up and walked to the edge of the pool “Are you coming in Tori?” Johnny asked and when she hesitated “Come on…I’ll pull you around on the raft”

She didn’t even hesitate; she jumped in feet first and came up with a big smile on her face and swam over and started to play.

I sat forward watching her go; she was totally carefree…just like a kid.

After a few minutes, Max came out and came over to me “Are you going to get in Aubrey?”

“Yeah…probably…I was just taking a break” I told him.

“We were kind of hoping you’d come in…Johnny and Tori want to take us on in pool basketball” Max said.

“Well” I stood up “Why didn’t you say so!” I answered and cannonballed in to their cheers.

As I came up out of the water, I got my first real chance to feel how differently my body moved and just how dangerous that was.

First, off, my increased weight made me drop all the way down underwater until my ass hit bottom. I also came out much quicker being 9 inches taller. I put my big feet on the bottom and shoved up and boom, I was out of the water.

I sucked in a breath of air and another new instinct kicked in; the instinct to grab my bikini top before I flashed two 13 year old boys.

In one motion, I flung my long blonde hair back mermaid style, opened my mouth and eyes, ran my hands over my eyes and hair and grabbed my top to adjust it and catch it from falling down. It was like slow motion. I felt my boobs bounce and the top slide so I caught the straps and yanked up shimmying my shoulders at the same time.

I gasped but I caught an unmistakable look on Johnny face as he hoped to get a free show of a college girl’s boobs!

I blushed a bit and adjusted my bottoms as I waded over to get the ball floating on the surface.

Tori laughed at me and jumped my way “Things you need to worry about now Aubrey” she told me as she took the ball from my hands and made a mad dash across the pool towards her basket.

While I was taller than everyone else in the pool, I was also now the slowest. My body slogged through the water with my extra weight and jiggling boobs and while I really enjoyed keeping everyone else at arm’s length, I was kind of jealous about how quick Tori was “That’s the body type I’m used to” I thought.

I was enjoying teasing Johnny though. His crush on me was blatantly obvious; in fact, I was amazed he wasn’t pitching a tent in his swim trunks over me. I made sure to guard him and leave Max to guard Tori just to give him a cheap thrill.

After the game; which we won; I climbed out of the water once again almost losing both halves of my suit. Tori was climbing out next to me with no trouble, giggling at me as I hiked up my bottoms and jerked up my top.

“Tough keeping track of the girls isn’t it?”

“Yeah…I’m still getting used to this” I admitted grabbing my towel to dry off.

“It should take some getting used to ya giant!” Tori teased.

I was surprised at her comment. It sounded funny and not angry at all. I shook my head as I walked back down the steps and towards the house. I was at the sliding doors when I heard Tori call out “Wait up”

I smiled as she came in with me.

Once on the other side of the doors, things felt different; more serious for a moment. “Whoa” Tori said beside me. She had her towel wrapped around her shoulders and I had mine around my chest. The house was subtly different.

The book I was reading; Harry Potter…it wasn’t on the table. I had read that book a decade ago. There was a black purse sitting on the dining room table and a Columbia sweatshirt laying on top of it. I opened the purse and explored.

A student ID from Columbia was in there on a lanyard. I saw the made up face of a young woman with blonde hair “That’s me?” I said realizing that I really hadn’t even looked at my own face yet. I knew what it looked like, that part was just simply there in my mind but I hadn’t, you know, seen it yet.

“Aubrey E. Linton” I read off the name.

I opened the wallet and took out my driver’s license “I have my driver’s license” I said. I saw Tori slowly nodding at me “And I don’t and won’t for another 6 years at least”

“You’re taking this rather well. I really thought you’d be pissed” I said.

“Yeah…funny thing about that: I’m not mad. For some reason; this feels right to me” she shrugged “Weird huh?”

I took a deep breath “It is but I understand it completely; I feel normal at this age too already”

Tori smirked at me.

“Not completely mind you; moving around in the pool was super freaky; like controlling a monster body” I laughed. I looked at the picture and license and saw that I was 5’5” and weighed 135. I opened the wallet section and found three 20’s. “You want pizza?” I asked.

I knew I had a cell phone and I knew the code to open it as I called Pizza Hut and order a large cheese and a large pepperoni to be delivered figuring that our brothers wouldn’t mind pizza for lunch.

“My bag changed” I heard Tori say. I turned around and saw her across the room holding a bright pink and white polka dotted back pack. “The bag I brought my change of clothes in this morning was black and white; now it’s pink and white. It’s in the same place but…different”.

“I’m sure it is” I replied as I walked over.

Tori just shook her head again as she brought out kid sized versions of the clothes she had packed. Plain pink underwear, pink shorts and a yellow t-shirt “Victoria Howard…68 Grant Street” she read her name and address which were written in a childish hand on the inside of the bag.

“Come upstairs with me” I told her and she followed me up the stairs.

“Oh” I said coming into my very different room. It was sterile. I knew it was my room when I was home from college but my parents also used it as a guest room. The walls were a basic gray and while there were piles of clothes and books and just general stuff that I immediately recognized as my own; it wasn’t the bright childish room it had been this morning.

What drew Tori’s attention was the full length mirror on the back of the door. She walked up to it and after an initial jump; she laughed. “Oh my gosh…I’d almost forgotten but yeah…this is me” she said in a surprisingly upbeat tone.

I walked over and joined her “Oh! Ha ha!” I laughed at once recognizing and yet seeing my face and body for the first time at this age and size.

The fact that Tori was at my chin was one thing; that she was flat and I was curvy and built was another. Then I remembered my hair eventually settling in as a mouse brown and the fact that I dyed it blonde regularly.

“I’m not upset” Tori said checking herself out, even turning back and forth to get profile views before she walked away.

I lingered a bit longer. I rose up on my tip toes, I pouted and made a duck face, I lifted up my boobs and made mega cleavage before I laughed at myself and took off my top.

Tori blinked and giggled at me. “What; we both know what these are” I replied letting them jiggle naturally as I also took off my bikini bottoms tossing them into the laundry basket.

“I know” she rolled her eyes “I have more time with them than you do really”

I got dressed in plain panties and a pair of black shorts before I pulled out a gray bra “36C for your information” I said to her approving nod.

“Not bad” she replied as I put on my bra and a plain gray top.

I brushed out my long hair and said “Did you have Mrs. Martin last year?”

Tori just smiled “You know I did”

We went back down and we talked a bit more waiting for the pizza to show up. I realized that many of her memories were transferring to me as I started seeing friends and classmates at the University. “Mine must be heading her way too” I thought just as the pizza arrived.

Both Max and Johnny were ecstatic when they saw me carrying the pizza boxes out with Tori behind me carrying 4 cans of Pepsi and some paper plates.

“Lunch!” I called out and they came running, dripping as they sat down and dug in.

After they both inhaled their first 2 pieces I said “See this is what I miss when I’m away”

Max just smiled and Johnny blushed again. “You’re a nice big brother Johnny…I doubt Max would be as nice to me if our roles were reversed” I winked at Tori who nearly spit out her drink of Pepsi she had in her mouth.

“Um…yeah…I guess” Johnny mumbled.

“No! I mean it. I’ve watched you too play and hang out; you’re a good brother” I told him and finally he looked up and we made direct eye contact. I gave him a smile and watched him go pale.

Max continued eating “I’ve always been good to little Maximillian” I hit my little brother on the shoulder “I never picked on you right Max”

“Mom would have killed you if you had” he replied.

“True dat” I laughed.

The boys got up “Am I supposed to tell you to wait a half hour before you get back in or you’ll die of cramps?” I said as I cleaned up. They stopped and I waved “That’s an old wives tale; you can get back in the pool”

Tori and I were alone again. She reached into her bag and brought out Harry Potter and the Chamber of Secrets “Good book; have you read it before?” I asked as I took a seat next to her on a lawn chair and stretched my legs out.

“What do you think?” she asked with a raised eyebrow and we both laughed.