Mom grabbed my cock, taking it in her hands then guiding it to her mouth as she took my cock deep down her throat. Damn, my mom could suck cock. I was...going to have to ask her how she was so good at blow jobs. I wasn't going to ask right this second as I was trying to make sure I didn't fall over. Mom was ignoring Sarah as she sucked my cock. Sarah was bouncing on the couch and moaning clearly on the verge of a massive orgasm if I was any judge of her condition. "NOOOOOO, don't leave me. I reached into my night stand and pulled out one of my vibrators, put fresh batteries in it and turned it on low as to not arouse his suspicion ;)I used my phone to watch porn while I masturbated right behind him. Mostly lesbian, but some anal. I vibed myself for a good 20 minutes on low before I turned it up and really got into it. I was really excited, totally soaked by the time he realized what I was doing. I was moaning loudly, and gyrating on the bed behind him. Then he turned around and. I checked it by pulling away as much as the train wall would let me, but no, that bum pushed back against my hardening cock. The lady just looked back over her shoulder and smiled, put a finger to her lips to mime a shush sound. After a while I was as hard as a rock and getting uncomfortable, after all my cock was being squeezed between two very taught bum cheeks. The lady must have worked out and I was having very erotic day dreams. I was brought out of my dream when I felt a hand slide. Just to make sure he didn't feel bad and embarrassed the following day we also stripped and joined him for twenty minutes before suggesting he might like to go to bed as he'd had a long day. To be honest Anne did happen to notice as he got out of the pool and dried off he was well hung and a good body, Joel had also made it obvious he was attracted to her.I suppose I shouldn't have been surprised that as the week went on Anne and Joel got very friendly with each other and the skinny dipping was.