Biology Studies -- Two Makes Three
This story is a work of fiction. While I myself fantasized about something like this happening when I was in High School, it is only a fantasy.
It was my senior year in high school and my grade point average was barely getting by to be able to graduate. I was 18 and in my second semester. My grades were good enough to graduate in all but one class, Biology. There were a couple of other classmates that were in the same predicament as I was and had resorted to studying together in order to bring our grades up. I had teamed up with Carol, one of my classmates, in order to do some togetherness studying at my house.
On the weekend before a large test, Carol had come over to my house so the two of us could study together. The chapters we were having trouble with the most was genetics and reproduction. While going over some of the stuff in the book, we began relating different family traits we though might be genetically related. Since we were studying reproduction, it somehow lead to comparing our own bodies with the descriptions and drawings in our books.
That weekend before the big test, Carol's fascination with the size and shape of my cock, lead to giving me a really nice blowjob. My exploration of Carol's slit lead to stimulating her clit and causing her to have an orgasm. After her orgasm was subsiding, I hugged her tightly. In this position, the alignment of our bodies had my cock lined up with her slick pussy. It didn't take much shifting of our bodies for my cock to soon be imbedded into her. From there, instinct took over and it wasn't long before her womb was filled with my sperm, to overflowing.