I tend to spend a lot of the time at the local rec center. It's not a big facility, but it has all of my needs. In one part it has gender-specific locker rooms and in the back there is a spa area that has some coed facilities such as pools, saunas, etc.

I'm often there quite late at night because of my work schedule and I tend to end my day with a trip in the sauna while I let my body relax from the workout. Usually by this time the sauna is empty as is this locker room in general so I had never encountered anyone else in there that late. However, as I opened the sauna door one day a couple months back I walked in and took off my towel only to hear a polite chuckle over my shoulder. I turned mortified to realize that I had just showed my dick off to some girl who was maybe in her early 20s. I quickly tried to cover it up but she said, "No reason to be shy now, the cat's already out of the bag," as she chuckled. I apologized as I sat down and she said, "Really not a problem, it was actually pretty thick," she said with a wink.

I was instantly excited! I sat down and jokingly said, well in that case, and opened my towel up to show her again except now it was at about half mast. She sat there staring and chuckling now and asked me if I always come in here naked. I said yes and she said she had never been nude in a sauna before. We for a few minutes about it and she took off her top to 'give it a try.' She knew what she was doing and by the time her top hit the floor I was rock hard standing straight up.

She noticed my hard-on and said, "Well, somebody seems excited," as she jokingly made the jacking off hand gesture toward me chuckling. I grabbed my shaft and said, "well usually he has nothing to be excited about in here." She asked me if I would stroke it off while she watched and I obliged. After about a minute she was touching herself too. She asked if I was going to cum and I told her I could, but she would have to help me a little more.

That was all she needed to jump across and start jerking me furiously. This girl was insane, absolutely going to town on my dick. Within about 2 minutes I was getting close and I told her I was about to cum. She instantly leaned back and smiled and said, "Well, go ahead then!"

I started jerking myself again and when I came it went all over her. Some in her hair, a bunch on her face, tits, stomach. It was one of the biggest loads I've ever seen. Without missing a beat or cleaning anything off she stands up, turns around and walks out of the sauna drenched from head to toe in cum. By the time I pulled myself together and got out she was gone, and I have never seen her since.