Know what? If you're so worried about being caught. While you're in the shower use the shower head, turn it to the one that's meant to be use to massage you're back and use it against your clit. I do that and get orgasms everyday! Plus if you're alone wash your hands and just massage your clit with your fingers, a mirror helps if you want to get and orgams because it turns you on in ways i can't explain.
I've never told anyone this but since no one can get my name. I'll shoot, When I'm alot I'll call my best friend,(It's a boy) and we've never had sex but he touches me and feels me insaide and out, IIt's heaven. And we're only friends :

He never tod anyone though lol Anyways have fun and don't hurt yourself. Oh and remember to wash your hands.