I sit topless and tell you about the time in high school that I had sex in front of my step-dad. We were being sneaky though, so he didn't know what was going on. Or so we thought. I stroked my boyfriend's cock underwater at the lake, as he pushed my swim bottoms to the side and started fingering me. My step-dad was on the dock, reading. I climb on top of my boyfriends hard cock, sticking it inside me. I'm so sure that my step-dad can't see what is going on underneath the water, but maybe I shouldn't be...