I was on vacation with my wife, kids and my wife's parents recently. We rented a beautiful house by the beach that had a pool and hot tub. The hot tub was on the 2nd floor with a wooden deck above it. One night my wife said she wanted to sit in the hot tub and relax. I wasn't really into it at the time so she went alone. A little later I went out to the deck above the hot tub, not even thinking about what she was doing. While walking on the deck I noticed through the floorboards that she was sitting in the middle of the tub with her legs spread apart, her head back, her eyes closed and she was smiling just a bit. I put my face down to the deck to get a better view and saw why she was smiling - her bikini bottom was pulled to the side and one of the hot tub jets was aimed directly at her pussy! I've never seen her masturbate, and she claims that she never does it, but there she was getting herself off right before my eyes. What a turn-on. I watched as she repeatedly got in close to the jet and gave herself a shaking orgasm, then backed off a bit to recover - she did this 3 or 4 times while I was watching. She did this 5 out of the 8 nights in a row and I watched her every time. Now she says she wants to get a hot tub at home and of course I said yes, and you can bet I'll be setting up a webcam.