I know that my step-son Pierce Paris finds me sexy. I've seen him looking at me from time to time. But this was a little much. While I was working out I saw Pierce grabbing his massive junk through his shorts! I caught him & he was so embarrassed. I had to make this right & besides, I was a little horny myself. I love Pierce's dad very much, but he can’t please me in bed, but his son sure can! I rode that thick sausage all afternoon long, & got a great work out in! Sorry to my husband, but…