I'm not sure if I've seen this technique on here before but this has been a recent source of pleasure for me.
I will take my laptop and get a video going on it and set it on the bathroom counter. Then I strip down at sit on the edge of the bath tub. I get the shower massager down and turn on the water. I sit spread eagle and use the wide spray aimed at my balls while I watch the video. I will vary the aim up and down my cock. I will also play with the temperature controls to help with my control. If I feel I'm getting too close too soon I will turn the temperature down as far as it will go. When I'm ready to cum, I will turn the spray to the pulsing stream and aim it just under the head of my cock. The feeling is amazing and cleanup is a breeze. Hope you enjoy this as much as I do.