I was 13 when this happened. I had a friend that had moved out of town a year earlier but they were going to the beach and so was I at the same time so we met up and spent a couple of nights together.
In the last year I had discovered jacking off and his mom was always a MILF. The last day I was with them we all decided to go to the pool. Well his mom shows up in a tiny black bikini. She had nice perky B cup tits, great ass and red hair. When I saw this it was great needless to say but after she had gotten in the pool and just got out, her nipples were like erasers poking through her bikini!
I saw this and wanted to blow my load right there! Instead I got out of the pool and grabbed my towel and headed for the bathroom of the hotel. I pulled down my swimsuit and started jacking thinking about his mom and how I wanted to cover her in my cum. It didn't take me long before I blew a load across the stall and onto the wall of the stall and watched as it dripped down and onto the floor. I wish I could meet back up with them again and see his mom now!