Even as a teenager, I knew there were probably more than the two sexual positions I knew about, which were man on top and woman on top. After consulting more experienced sources i.e. my friends who were two years older than I, I wasn't much more advanced in my quest for knowledge. I did learn that my best friend, Marlynn, had tried side to side. The next month, at age fifteen and a high school sophomore, Marlynn was pregnant and dropped out of school. She was pulled out so quickly that I never even got the chance to ask her if it was the side to side position that did her in. Also, growing up Catholic (Marlynn's first name was really Rosary) I wondered if getting pregnant was her punishment for going all the way.
Years later, I found out that side to side was fairly difficult unless the guy was well endowed and/or the girl very flexible, which, thanks to being double-jointed, I was. Still, it seemed as though guys preferred to be on top. I thought perhaps it was a control issue, since, as young as we all were then, the whole act never seemed to go beyond a few strokes.