Shower masturbation?!

Alright, I am so curious! So I know people use shower heads / faucet to masturbate, but my question is HOW exactly do you do it? For me it just hurts too much because of how much pressure there is.. am i doing it wrong? I have a vibrator but I’d love to explore this type of thing, lol. Again, just curious! Please let me know how you do it!