I was pretty excited, going to college, away from home. I was going to rock that city! Thank goodness most of my friends started a year ago already, since my parents held me back for a year before starting elementary school, so I had a pretty good idea what was coming.

First thing to get was a fake driver's license, so it looked like I was over twenty-one, and I would be able to drink. They pretty much handed them out for free, so before school even started I would party!

Then the girls… oh boy, skimpy t-shirts and shorts, showing off big boobs and long legs. Again… party!

It was a bit unfortunate that my roommate was more of a nerd, but you can't have it all. Enough friends here to go out with, any time.

Then there was the inconvenience of picking classes. Gotta see how well that would fit with football practice and stuff. One class though, that my friends had told me I should try to get in, although none of them had managed themselves yet, since only thirty-two were accepted per year. The hottest professor on campus, teaching Gender studies. And guess what. I was accepted!

I managed to secure a few online classes as well, so I could sleep late. Sports history. Media relations. Most football players went with this kind of stuff. Plus some mandatory, yet very generic classes. Should be an easy year, as long as I kept my game, my football game, up.

I'm not gonna lie, but the first week of classes was not quite what I had expected. They all expected you to make notes and stuff, and participate. Ugh! And all examination dates were set right away. Far in the future still, so I wasn't going to worry about that for a while.

In a way, Gender studies, my only class on Friday, was a relief. Sure, you could make notes, but it was way more hands-on and informal. Professor McBride did not disappoint in her leather pencil skirt and high heels, but with her blazer over a white blouse she looked professional. Like a sexy librarian, I chuckled.

There were only eight guys versus twenty-four girls, which I thought was a perfect split. Three girls per guy, and we had at least four nerdy guys, so more for me, I figured. In all honesty, there were also a few nerdy girls, but I saw enough sexy ones as well.

The professor was excited. She wrote one question on the blackboard and we would work on an answer all year. “Is gender determined at birth?”

Everyone was called out to answer the question, and the professor tallied the yes’s and no's. There were only five no's which I thought was stupid, and I spoke up, saying that you only have to check your birth certificate. And I got an approving nod from the professor.

Then she changed the question on the blackboard slightly, and added the word “perceived” in front of the word “gender”. This started a whole discussion on how it changed the question, until one pretty girl stated that she was born male, but her perceived gender was hundred percent female. Not only did she get an approving nod, but also a hug from the professor.

It was a bit of a shock for me, as I had not expected that, as a matter of fact, I had pegged that girl already as dating material. And what only a minute ago was perfectly black and white in my mind now suddenly had a grey area. And that's exactly what the professor pointed out, and why this question could take a whole year to answer. As a matter of fact, she said it would be the only question on the final examination of the year.

In a way it worried me a bit, as she was clear that this was not a simple yes/no anymore. Sufficient argumentation would have to be provided, with statistical information, logical reasoning, common sense, political and religious aspects, and above all, creative experiments.

And for the last part she asked us guys who we thought had the biggest dick.

There was some commotion after that about her choice of words, and she explained that in the age group that we were in, most likely we would cringe more if she would use the politically correct words like penis or vagina. And I had to agree with that.

She also made it clear that she was not asking who we thought “was” the biggest dick, like one girl thought she had said. So, certain words were allowed, like dick, pussy, fuck and cum. Other words were off limits, like shemale or dick-girl, and as she put her arm around Sheila, she explained we should use trans girl or trans woman.

There was no doubt in my mind that I was the biggest jock, and so did the other seven guys, I guess, as no one spoke up. So I raised my hand and said, "I think I qualify, ma'am”. Once more she nodded her approval. I liked her more and more.

The question of who was the most experienced girl became much more chaotic. Hand jobs, blow jobs, straight sex and anal sex were tallied, and I was surprised how high Sheila scored in all but one of these categories. But it was Shakira, a beautiful Latina, proudly named after the beautiful singer I bet, who came out on top of all categories. I had her pegged as my number one to ask out, from the first moment I entered the room.

Anyway, the professor had everyone split up in groups of four, one guy with three girls, and these groups had to start doing research on our main question on the board, but also how that related to gays and lesbians. Essentially, were you born gay, or being made into one?

As all groups were busy, Shakira and I left with the professor to a back room, where she explained the plan, and the bonus points both of us could receive, if we were willing to participate. We were to be an exclusive couple for the school year, with no other sex partners. Not quite how I had envisioned my first year in college, but dating Shakira did not seem like any hardship.

Of course there was a catch. Exclusivity was to be enforced through chastity. I would put access to my dick in Shakira's hands, while I would control access to her pussy. And the professor was pretty clear on this experiment. If you put an alpha male and an alpha female together under these conditions, would it lead to an increase or decrease in our sexual activity?

I felt quite uncomfortable about this experiment, but of course I couldn't show it. So I said, “I'm in, if Shakira is in”, putting the potential blame on her. She put it right back at me though by suggesting that she would do it only if my dick was indeed the size that I claimed it to be. The professor took my side, I think, by suggesting Shakira give me a blow job, and we both would know if the other had been boasting.

Shakira took the lead now. Without saying a word she fell to her knees in front of me, and she opened my pants. And that happened to be one of my fantasies, a woman who likes to take control at that point. And as she pulled my dick from my pants, I could feel it grow in her hands already. And her last words before she inhaled it were "I don't think I will be disappointed”.

I knew I had won the battle of alpha-ness by then already, but I had to agree how good she was at this. Completely unaware that the professor was still watching, I had my hand on the back of Shakira's head, as she expertly pumped me while deep throating my dick. I lasted only a minute.

I know this may sound crazy, but I could be perfectly happy with never fucking her pussy, if she'd give me this kind of pleasure. As I went soft after she let me go from her mouth, with not one drop of my cum spilled, the professor handed me a metal cage and a ring. The ring clicked together behind my scrotum, then the cage went over my deflated dick and clicked into the ring. There was a tiny key sticking out, but the professor stopped me before I could officially lock myself.

The device she had for Shakira was actually much more severe. Shiny metal that was wrapped around her hips, then from front to back between her legs and with a few clicks the access to her pussy was gone, although the metal strip had holes through which she could pee and poo.

So, we both had a lock and a key, and I locked my device, pulling the key out, as she did the same with hers. Then in an almost ceremonial gesture I offered her my key and I received hers. To “celebrate” Shakira kissed me full on the mouth and once again I got lost in how sexy this woman was. She was mine for the year, and who knows how long after that.

We joined the rest of the class again and in my mind I thanked my friends for suggesting this class. No matter what would happen this year, it was by far more interesting than any other class I had taken this week.

Five minutes before the end the professor explained the situation between Shakira and me, and the different directions this experiment could go. We promised to give a five minute update at the end of each class, and when we left, everyone had a smile on their face, including me and Shakira.

We briefly chatted before we went our own way, to discuss where we'd meet that night, and it would be a dancing as Shakira, true to the singer's heritage, was a bitch on the floor, as she called herself. I smiled, feeling like I had just won the jackpot.

Well, I won't say that the cage wasn't uncomfortable. Peeing was a bit more messy and I could continually feel the weight in my crotch, even though it was surprisingly light. But the worst was when I saw a sexy girl, and one of my friends mentioned how he would fuck her if he got the chance. Just the thought made me hard, and I didn't like the pain that followed. The only good thing? It never lasted long.

Now, later on the dance floor, it was good that I kept myself in shape, because I couldn't believe how much energy Shakira had. But, it was very well possible that she was testing me, and I didn't disappoint her again. Later, during a slow number we french kissed for the first time, and I counted myself lucky once more. She pressed her body hard in my crotch and I grew hard instantly, and she clearly noticed the instant pain through our kiss.

She took my hand and led us off the floor, and through a back door she found a small private area. She clearly knew her way here. Without saying a word, she once more took my dick from my pants, but she didn't unlock me. Instead, she took me in, with cage and all.

It was weird. I was on the edge of getting hard and maintaining some control, while she sucked every drop of pre-cum from me. I managed to enjoy it somewhat, and she made me cum even, but it felt like a wasted orgasm. Yes, I emptied my balls, but it didn't give me the same enjoyment as earlier that day. She however got a full load and she kissed me afterwards. I could taste a bit of myself on her tongue still but soon enjoyed the kiss once more. I could only conclude she was an expert.

Before we went back dancing she explained that her period had started just today, but next week she promised me the best fuck of my life. Until then she could only promise blow jobs as she really liked the taste of me.

The nice thing about all of this was that we both considered ourselves a couple now, and I saw her every day since. We did couple-type things, like dinner, watching games together, and she even came by to watch me during a training session. She became my workout buddy, and she looked great in her yoga style outfits. It only made sense that I joined her in her yoga class as well.

Our first time fucking, the Sunday a week after we were locked up, started with a bit of ceremony, as she unlocked me, leaving the ring around my scrotum, and I unlocked her, the whole metal contraption still hanging down from the back, but her pussy free and extremely wet, much more horny than me. I guess the blow job every day, even though locked, had not driven me crazy like her.

She was a tiger in bed, and she told me not to worry, as she was on birth control. She wanted all my seed inside her. I gave her everything I had, but I never got one hundred percent hard before I shot my load. But, it was enough to drag her over the edge as well.

Afterwards we performed the same ceremony again, as I locked her metal band again and she clicked my cage back into the ring around my scrotum. It almost seemed smaller than before, but I knew that wasn't possible.

In the weeks that followed the coach put me in a different position, as I had lost weight, but I was much more agile as well as faster. “Keep doing what you do”, he said and he suggested in my new position I had more chances to make it on the field during games. What I was doing was eating healthier, thanks to Shakira, and I was getting better at yoga, which explained my agility, plus my normal workout was more cardio now, which explained my improved speed.

Sexually, it was going less in my opinion, although Shakira did not complain. She still managed to drain my balls, but to me it felt more and more like an unfulfilled orgasm. And when we had weekend sex, as we called our unlocked sessions, I had more trouble to please her, up to the point that she suggested I needed some help.

During her blow jobs she had started playing around my anal hole already, and started pushing her finger in, causing me to cum, although it did upset me at first. But, I couldn't deny that it was helping, and soon she had some sort of dildo that would vibrate inside me, and trigger the familiar pain caused by a good hard-on.

Soon, that dildo was part of weekend sex as well, as it made me grow inside her. Nevertheless, my cages got smaller indeed, as the professor had told her that the size needed to match my size in my deflated state. At the same time, the dildo in my rear became larger and larger, and I had to beg her to turn on the vibration sooner and more intensely.

Then one day, when I came, I no longer shot my load, and Shakira was mad. My cage was not even an inch long and she called me a sissy. I mean, not in a bad way, but she let me know that I wasn't able anymore to fulfill her needs. And until then, during our Friday classes, we had downplayed my lowered libido, but she planned to share my erectile dysfunction with the group. I begged her not to.

Things changed after that. First, during weekend sex, I would unlock her and fuck her with a massive dildo until she'd cum. Then she would use the same dildo on me, without ever unlocking me. The fact that I came harder and harder from it did not go unnoticed though.

She threatened, suggested I mean, that if I wanted to be fucked in the ass, I should wear her panties as well. Then it was a butt plug that I wore 24/7. Soon I was wearing a bra under my clothes, as the loss of mass in my body seemed to have moved to my chest area. By then, during yoga, I wore one of her outfits that fit me surprisingly well. Despite my improved agility I did lose my spot on the football team, which freed up my Saturdays, and on the weekends I became Lolita.

It's amazing what a bit of makeup and a wig can do to your looks, as when we went out, nobody would think I was a guy anymore. Sheila joined us often, and she was the first to take my anal virginity with a real dick.

I found that guys love leather skirts, and I took bigger and bigger dicks in my rear, while blowing their friend. It became harder and harder to become myself again during the week and at some point I said “screw it!” and I changed my name officially as well as my records.

That Friday, during our Gender studies class, I reported that I had gone from the biggest jock to the biggest slut in the room, and I was proud to finally say it out loud. Some people were shocked, but professor McBride nodded approvingly. She pointed at the blackboard where the question from our first class was still visible. And I knew the answer by now. It wasn't even a grey area anymore.

Shakira and I kept dating but I was totally submissive to her. It turned out that in the early days, when she convinced me to eat healthy, she had been feeding me female hormones, which had caused the drastic change in my body mass. I could only be grateful.

We got double venus symbol tattoos, intertwined hand mirrors, on our wrists, and mine had Shakira written under it, and hers spelled Lolita. We had long given up on her chastity, while mine was reduced to the smallest possible. I was considering giving up on my scrotum. I ate her pussy out every day, like she had done in the past with my dick. Likewise, we shared the cum in our mouth after blowing a random guy.

I scored one hundred and ten percent on my finals, as did Shakira, and we were both invited to take the Advanced class the following year. During the year my friends were shocked about what had happened to me, but after a few blow jobs we were even better friends. My parents grudgingly accepted they had a daughter now, but once again, it helped that Shakira stood firmly besides me.