I really love taking showers, I get horny just thinking about taking one. The reason for this is I always have the most amazing orgasms in the shower.
We have one of those types of shower roses that you can take off the wall mount and hand-hold. I like to stand with my legs apart and use the shower rose, with its constant stream of hot, high pressured water massage my arse and balls. My cock usually gets in the way, just before it starts rising, and the pressure of the water on it makes me want to piss. I let go and pee all over the shower cubicle.
Then I squat down, still with the rose underneath myself and slowly play the water in small circles, alternating between massaging my arse, balls and now fully hard cock. Bit by bit I move the rose up along the shaft and let the water play on the underneath of my glans. By slowly moving the rose the water simulates someone rubbing me. It is the most awesome feeling. I usually do this up to the point of cumming then stop. I lather up and wash myself. By this stage my cock has gone limp again and I take great delight in starting all over again. My cock is now even more sensitive and stands straight and proud, eagerly awaiting the jet of water coming. I love watching my cock swell and twitch as I apply the water jet. Just as I'm about to come I have the most amazing sense of pleasure and its so neat just being able to let go and blow great spurts of cum, knowing that the resulting mess will get washed away anyway. Afterwards I feel so drained and dizzy that I have to stay squatting before I stand up or I feel like I might fall over.
The only problems is that it uses a lot of hot water, as I spend ages in the shower nowadays.