At my local gym we have a big hydro pool with very powerful water jets. In the gym area the running manchines overlook the pool area and you can see who's in the pool.
Well this one afternoon I was on the running manchine when I noticed to of their young women in the pool standing in front of the water jets and they were getting off from it by the look on the faces that they enjoying themselves and they looked up at me on the running machines.
I got hard thinking of their tight pussies checking wet. After they finished getting off they went out of the pool. I went in the pool later the water that powerful I just sat down near the water jets and got off in the pool without touching myself, its one of the best orgasms I have had and look forward to the gym again.