Biology 101 Lesson

My first real life sex lesson happened between my then 15 year older sister and a boy she had met at the mall. He had given her a ride home on his motorcycle and my mother wasn't home. I was nine and didn't stay in my room like he told me.

I watched him take her pants off and spread her legs and eat her. He kept telling her how he liked wet pussy, and she kept making noises. He got up and lowered his pants. His dick was sticking outright. My sister just sat and stared at it. He told her to show him her tits. And get on the floor and open up. She did what he told her and he got on her and his dick disappeared in her.

It looked like he attacked her. Then it was over. He got dressed and told me when I grew up it was going to be my turn. And he left. We never saw him again. When I went through puberty my sister watched me like a hawk. I lasted through high school and part of college before it was my turn to open my legs and have a dick disappear in me.