I'm almost too old to be vacationing with my parents but they invited me along last minute on an extended weekend trip to Mexico and I couldn't resist. It's never a guarantee if I'm going to hook up with a girl but with my step-mom around, something fun is sure to happen. No more had we settled in our rooms and had a few minutes at the pool when my step mom and I decided to go back to our rooms to get ready for dinner. My step-dad was in the lobby getting a rental car set up and my step-mom was putting her make-up on. I couldn't help but stare at her and her perfect lips, wishing they were wrapped around my cock. As my dick began to swell I had to rub it in hopes she would have the same thoughts and sneak a quick hand job in before step-dad came back to the room