As long as I can remember, I've been interested in the human body., I was particularly drawn to our 'sexual characteristics' as it was called in biology class. When it was time to go to university, I chose biomedical sciences. Not medicine, I didn't want to deal with patients.

So here I am now, 20 years old and in my second year. I haven't had much success with women, I prefer to stay in the background. I don't look too bad, if I say so myself. About 1.80m tall, skinny with a somewhat athletic body without being very muscular, with blond hair and blue eyes behind glasses.

Because of my studies, I have access to the university lab, where I regularly experiment after classes. My latest experiment is about modifying Sildenafil, better known as Viagra. My plan is to modify the pill so that your penis becomes larger. There have been many attempts and many urban legends, but I am determined to make it work. After months of work, I think I've finally found the right formula. Now I just have to try it out.

In the evening, in my dorm room, I decide to test it. I undress and examine my body. My flaccid penis hangs down. I take a photo and then make it erect. My erection is about 6 inches long. I take another photo to have comparison material later. I take the pill and wait for the effect. After about five minutes, I feel a warm sensation going to my groin. My penis slowly comes to life and grows to its normal size. A minute later, I feel the warmth increasing. I see my penis slowly getting longer and thicker. My balls also start to grow. As a side effect, I become incredibly horny. With great difficulty, I can keep my hands off my dick and wait for the process to complete.

After another minute, my erection stops growing. I look in amazement at my dick, now 8 inches long with thick veins pulsating under the skin. My balls are now about the size of two eggs and full of seed wanting to come out.

I'm still marveling at the result when I hear a knock on the door and see it open. 'Shit, I forgot to lock the door,' I think. I try to cover myself up but to no effect. Through the door comes one of my female roommates, probably to ask for help with their studies...

I hope you like my idea! I'm looking for a detailed and descriptive partner. Send a chat on Discord (mriamabithorny) with a description of your character, or if you have some other fun additions to the story. Hope we can have some fun!

Of course I am 18 and all participants/characters must be 18 too.