Biology Stories

4,111 results
Orientation
Length
Source
Infinite Scroll

Spring Fling

by astuffedshirt_perv on Sep 23, 2019
Erotic Couplings

Finally spring break was here. All the cool kids were, of course, going away to someplace hot to party. I, on the other hand, didn't have parents who were made of money and would pay for such frivolity. Not that I would ever be invited anyway. Instead I was on my way up to St. Clair, to spend a week and an half earning two college credits in biology as part...

Shoot! Ch. 02

by daisyboi_sissy on Sep 14, 2017
Transsexuals & Crossdressers

Everyone in this erotic story is above the age of 18. This story is all fiction and just my imagination. (and fantasy) * "Damn Tori, you looking good enough to get lucky today sweetie!" I say laughing out loud. This was by far the hottest I has EVER dressed. My little bubble ass shown nicely from the side view in the sheer outfit. Tightening up the thong...

Understanding Human Sexuality

by edcrane on Sep 16, 2017
How To

A quick look in this "how to" section will reveal a veritable cornucopia of guides about why men and women do various things, or the precise mechanics of foreplay, or even how to "get laid" if you're a geeky guy. These can all be useful, but there's a tremendous amount of subjectivity involved in these discourses. The purpose of this rather brief essay is to...

Biology, for Miss Gutter

by brasso711 on Sep 16, 2017
First Time

Rachel was a curious 19 year old student, although she didn't have the best of records at her private school. She enjoyed most of her subjects, however she wasn't always the best at them. She found that she had a fascination especially within the sciences, and in particular biology, if not just for the subject. She was always interested further than most stu...

Robin and Alicia Ch. 02

by luckyfucker on Sep 12, 2017
Erotic Couplings

The next time I saw either of them was at our college reunion, four years later, when we were all around 27 years old. We had gone to a small college in Ohio, and while we were enjoying the nostalgia, the reunion activities were not all that exciting. I was hanging out with some friends, shooting the shit, and eventually I ended up in a group that included b...

Return of the Superior Men

by Samuelx on Sep 17, 2017
Non-Erotic

Good morning, folks. How's life treating you? My name is Bruce Portman and I'm a young black man from the town of Milton, Massachusetts. Many people who know me say that I am doing too much, too soon. Why? Because I'm a young man who believes in sticking up for his rights wherever he goes. I don't pay them any mind. If I were a young woman who spoke her mind...

Lecture Break

by kafloe on Sep 28, 2020
Erotic Couplings

It was barely past 2pm, yet already he felt like he had been there all afternoon. Even for someone who enjoyed this stuff, a several hour class at the end of the week was tough on everyone. As the class went on, lecturer dryly exposing about the development of ion channels in neuronal membranes; his eyes roamed around the sun-drenched seminar room. He darted...

Double Switch Ch. 03

by Just Plain Bill on Sep 13, 2017
Novels and Novellas

A Note to the reader: Double Switch is a novel with a Prologue, an Epilogue and 18 chapters. The Prologue has been on this site for some time. Unfor¬tunately, the censors at Literotica rejected my first and second chapters. I have rewritten them, making sure that no overt sexual activity takes place until the participants are 18 years of age. All of the ma...

Biology Project Gone Sexual

by NaughtyBlush on Sep 12, 2017
Erotic Couplings

NOTE: I am not American. I am Filipino. So English is not my second language and believe me, it is difficult to be erotic on your second language. Please be more considerate and I hope you still enjoy this story. Thank you. ***** Katrina wanted her sister's boyfriend more than anything. More than fifty per cent discounts, more than early Modern Family, mor...

Pound Cake

by cowboy109 on Sep 1, 2017
Group Sex

The first time Ernest Irving saw Elizabeth Smith was at the incline. The incline was a paved path that curved to the hilltop. A lot of students studied and sunbathed on the grassy side of the hill. Elizabeth was trying to get off her bike because the incline was too steep for her. As she swung her leg across the bike, the ankle cuff of her pants got caught o...