A few years ago, I went to one of those fun pools-you know the ones, with slides and wave machines etc. Anyway, this one had a jacuzzi too, but with ridiculously powerful jets.
I spent a lot of time in there, and just by accident walked in front of one of those jets which caught me by surprise. I quickly realised what it was doing to me, to pretending to look over the side of the jacuzzi into the rest of the pool, I stood with my clit pressed against the strong flow of the water. It was the MOST incredible feeling, and having to hide what I was doing added to the intensity.