(Story contains transformation. If you are not into this sort of thing then feel free to look elsewhere.)
Amanda and Elizabeth were getting ready for the big pool party happening over at Emily’s house. Both were decked out in matching red and blue bathing suits and were outside of Elizabeth’s house with Josh, who had offered to drive them over.

“So I know Emily said that we didn’t need to bring anything, but we should really bring something to play with just incase” Amanda said over to Elizabeth. “He Liz, would you happen to have anything in your garage?”
“I dunno, maybe we should check”
“Yeah sure, the party is only in an hour. We have time. Josh, can you help us?”
“Um, yes, sure I can help” replied Josh, who was startled from being included in the conversation so suddenly. They headed over to Elizabeth’s garage, which hopefully contained something amongst the junk that filled its walls. The three members immediately started to rummage around looking for anything for the pool. Elizabeth old found some children floaters, which were too small for her. Josh found some old bike innertubes, something that he thought could be used to float with. Amanda had more success in her search, just not in the traditional way.
All three met in the middle of the garage, the only part that was not filled with clutter.
“So did we find anything of use?” Josh asked out to the group. “I found these” to which he held out the inner tubes. The girls just nodded no and Elizabeth went next.
“I just found some old junk. How about you Amanda?”
Amanda smiled out to the group while hiding something behind her back. “Well I didn’t find a pool toy for say. I did find this!” exclaimed out Amanda, revealing a spray can from behind her back. InstaMelt read clearly across the front of the can, with small instructions littering the back. Amanda started to read these.
“For personal use only. Use InstaMelt on friends and family to make a mess. Apply to target liberally. Within 60 seconds the target will be reduced to a melted mass of themselves. Mold as needed and watch as your target will become the item of your choosing. To release target from their form, damage or break target into multiple pieces and rejoin them together. Soon after your target will be back to normal” read out Amanda, not missing a detail in her reading. She looked over to Elizabeth “Liz, do you still have that mold lying around her?”
“I think so. Maybe it’s in the corner? I guess I’ll look” stated Elizabeth, before walking over to the corner of the room to search through a massive pile of junk. Now Amanda looked over to Josh.
“Josh, I have a huge favor and I don’t know what to do if you say no. So please, please, let me make you into my toy” Josh knew the answer before she even finished her sentence. You see, Josh had a massive crush on Amanda, and it didn’t matter what she wanted if she took notice of him.

“Of course, what do you need?”
“Well can you stand in this pan while I...” started Amanda, but Josh was already standing in the wash basin Amanda had pointed to. She started to shake the can, thoroughly mixing the contents.
“So Josh, you sure about this? You don’t have to do this or anything” asked Amanda, but Josh was ready, he just grinned and said as much back before Amanda popped the top of the can off and began to spray. The mist was cold on his skin, and quickly made his clothes dame. Amanda sprayed up and down, covering every in of his body. She stepped back to admire her work, as she now looked at a soggy Josh. Time passed slowly, with a minute turning into a few. Josh was confused.
“Hey Amanda, didn’t you say the spray wwwoooouuuuuullllllllddddddddddddd…” Josh tried to say before sagging into his body and descending into the wash pan. He could feel his body warping under his own weight, leg pressing through leg, and arm into the body, until he couldn’t tell what was what. He could still see thankfully, but there was not a muscle in his body that would respond to his command. Amanda walked up to the pan, looking down at Josh. From the corner of his eye he could see Elizabeth dragging a large block that probably was covered up in the corner before.
“Well that took a while. Mind you the product did look a little old. Now I know you can still see me Josh but I wanted to tell you that for the next step you will be completely covered. But don’t worry, it will only take a few minutes. OK? OK.” Stated Amanda before she looked over at Elizabeth “So Lizzy, are we ready, or did we turn our friend to goo for no reason?”
“Yeah were ready. Don’t know why we kept this around for so many years now. It just takes up space. Well at least we had it for now. Start whenever you’re ready” answered Elizabeth. Amanda however just stood there, a confused look in her face. “Oh right, you don’t know how this works. I’ll get it then” she said, picking up and placing the basin on top of the cube. From the distance traveled Josh estimated the cube must have been four feet tall. “Amanda, can you get the other handle. Yeah that one. And on the count of three help me tilt the basin so that it pours into the hole right there” Elizabeth pointed to.
“Ok Liz, I’m ready. So, should I count or you count?”
“I can do it. I guess on three then. 1. 2. 3. Pour!” The basin started to tilt dangerously to one side, bring the liquid Josh closer and closer to falling out. The angle increased further, to the point where he could see over the rim of the basin and into the girls’ target. All he could see was a gaping black hole, from which no light came from. He had no idea what was to happen next and now he was having regrets for agreeing to it. But as Josh couldn’t tell the girls to stop, the basin was tipped and into the hole he slid.
Into the darkness the he went, but he didn’t make it far till the melted man hit a wall. His body started to work its way into a gap between the outer wall and the obstruction, being forced further and further by the mass of his body being added in. Slowly, through the darkness, the boy slid further wrapping around the obstruction till he felt his body slowly meet up at the bottom of the opening. He settled to a stop, unable to move and unable to see anything. There was nothing to hear, nor any indication of where he was. It could have been seconds, or minutes, as he waited within the device. Thoughts passed through Josh’s head, maybe the girls were just going to leave him there, maybe he would be stuck forever, or maybe something went wrong. Thankfully he wasn’t to get much further with his thoughts  before he felt vibrations reverberate throughout his body.
A crack rang out, followed by a pulling sensation across half of Josh’s body. The feeling grew greater and greater until a POP rang out, breaking the seal and exposing him to the outside world.
“Wow Liz, look how he turned out”
“Gimme a sec, just have to collapse the inner sac first and…….” CLANG Josh felt from within, a turning and collapsing feeling as something pulled away from his inner walls, leaving him hollow and flattening as the moments passed. Thankfully he wasn’t left within the mold for long as Elizabeth reached in and grabbed him.
“And now for the seal, what use is a toy that you can’t inflate right” asked Elizabeth rhetorically as she brought over Josh to a bench pressed against one of the walls. On the bench was a bottle of glue already opened and a rubber value to close the new toy up. Elizabeth placed Josh down in a way to give her easy access to his opening and began to slowly apply the glue around. A few good circles of glue and she placed valve over the opening, sealing him closed.
“Ok, I’m done here. I’ll leave the inflating to you Amanda, cause you know mouth and mouth to all is not my thing. Then we can dye him to a less weird color for our friends. You took the dye out like you said right?”
“Well duh, what else could I do. Hand him here and I’ll get started” Amanda told Elizabeth, taking you back from her in the process. Amanda popped his valve and raised Josh to her lips. A slow, deep breath in and then a pause before Josh felt air rushing into him. The air was damp and warm, filling him slowly as Amanda pushed forward. Increasingly more air entered Josh, pushing his sides away from each other and gradually rounding him into a sphere. Suddenly he was taunt with air, with every inch of his body stretching out from the pressure. Amanda tested the pressure with her hand, stroking it back and forth along his surface, the nails dragging over his glossy surface.
“So Elizabeth, what color should we make Josh?” Amanda said as she brought Josh near another shelf, this one laden with dyes. He noticed this very little however, as he could now see himself in a reflective sheet of metal. Nowhere was the boy to be found, but instead a light tan beach ball resided instead. In every detail he looked the part, from the seams to the shape. You could even see the colors of his old clothes swirled around his body.
“How about the classic white, red, yellow and blue ones we see all the time. Don’t want any of the other girls to know we brought some guy with us, right?”
“Sure, want to help me then?”
“Fine, it’s not that hard though” said Elizabeth as both girls picked up brushes and began to apply the colors to Josh. The process went quick, with Josh being able to watch the entire process from the reflective sheet. Soon he was just some generic beach ball, ready to be played with.
“Ok lets go. Now that our rides gone we’re going to have to hurry Elizabeth”
“Aren’t you forgetting something. Like maybe the fact that Josh won’t fit through the door now.”
“Oh right, sorry.” Called Amanda. She fumbled with the air valve, trying to quickly get it undone. I opened with a pop as air began to leak out of Josh, crinkling his surface as he lost shape. Amanda wasn’t satisfied with the speed however, and quickly placed her rump on Josh to force more air out. After a moment Elizabeth joined in too just to make the process faster. Josh felt both of their butts on his skin, the smooth skin guiding him lower and lower till he was smooth with the ground. A quick roll later and Josh was ready for transport. The girls rushed from the garage and down the couple of blocks to get to their party.
Loud music announced to the two friends that they had arrived at Emily’s house. They made their way to the backyard where they met Emily, who gave both the girls a massive hug.
“Hi Girls, so happy you could make it!” Emily announced to them.
“Of course we would come. Also, we brought a toy to play with in case you didn’t have one.” Amanda said to Emily, handing the deflated beach ball over in the process.
“That’s so nice that you thought of it. I think the other girls will make good use of it.  Well come on over to the backyard, everyone will be excited to meet you” Emily replied as she started to lead the group over to the back. After a short introduction to the other girls. Emily brought Josh around to the side of the house where she had an electric air pump hooked up. She walked up to the pump and gracelessly shoved the hose into your mouth, flicking the switch with her foot before taking a peek at her phone
The air rushed in faster and strong this time, way more than Amanda could ever had pushed. The air was cold and hard, and within seconds it was pushing Josh  taunt. Only Emily didn’t notice this as she was texting away on her phone while his skin pulled tighter and harder with every passing moment. It was almost painful to hold back the air but Emily finally noticed and kicked off the pump, disconnecting Josh and closing his valve. He was pushed away from the pump and off to the side, clearing more room around the pump.  The pump turned on two more times afterwards, but due to Josh’s position he couldn’t see the pump anymore.
A kick to Josh’s rear sent him flying back towards the pool. Flipping end over end he landed near the pool but now looking towards Emily as she returned to the party. Under each arm was a four foot beach ball of colors matching Joshes new look.
“Hi everyone, looks like we’re all here. Who is ready to party?” A cry rang out from the girls in the pools, there must have been around 12 in total, all wet and ready to play. ”All right then, lets parts!!!” The music rose in volume and activity stirred around the pool. Almost immediately a girl grabbed Josh from beside the pool and wrapped her arms around him. He was smashed onto her body, leaving nothing to the imagination and leaving two dents in his shape where her boobs pressed into him. The girl hopped back into the pool, bringing Josh with her.
The impact almost drove him from her arms, but instead a squeak sounded out from the friction between them and Josh deformed further from the girl’s cleavage. They bobbed a while, Josh becoming and improvised flotation device. This went on for a bit till he was released, sending him flying off the surface of the water and into another girls arms. This girl laughed out in surprise at his sudden appearance. But that didn’t stop her from taking advantage of the situation and calling out to a few other girls, all of who turned towards Josh’s holder when called. The position of the girls hands changed at that moment from his sides to his bottom, after which he was lobbed strait into the air by a few feet.

Josh didn’t descend far before he felt fingers dig deeply into his rear, forcing him back up in the air and towards another girl. This one repeated the same motion, sending him over to another one. This repeated again and again as the afternoon progressed.

Mind you Josh wasn’t always hit back properly. Sometimes the girls would miss, others would do on purpose to try and hit it off their chest. One even attempted to straddle the ball like a bull before being promptly being thrown off. Every hit left Josh feeling more sore, with the slaps stinging for long after. He was tired out thoroughly before the other girls, and Josh wasn’t even doing anything. But thankfully the host had similar thoughts to him, and started to call it quits.
“Alright everyone, I think it’s time for us to go inside. I’ll meet you there ok?” called out Emily. At this point everyone retreated indoors, happy to be out of the sun and somewhere with A/C. Emily took the moment to clean up the area. She picked up the trash, folded towels, and of course pulled the balls out of the pools and put the back beside the house, She pulled their plugs and, with the pump in reverse, pulled all the air out of the toys. She folded them neatly, making sure to set one aside for her friends that brought one. After all that Emily retreated into the house to finish with the party.

2 hours later

“Here you go girls. Thanks for bringing the ball and it was a blast. I hope we can do this again some time right?” Asked Emily to Amanda and Elizabeth.
“Of course” the pair replied, taking the deflated beach ball from Emily and placing it in their bag.
“Well, we have to go” Amanda called out. ”It was fun and I also hope we can do it again.”
“Byeee!!!” the girls called to each other before departing, a folded beach ball in tow.