Tickle Flush

I walked into the bathroom and noticed the stall door closed behind me. As I step the urinal (home base I like to call it) I heard water trickling from behind the door, sounding somewhere between a babbling brook and a raging waterfall. It definitly didn't sound like peeing but then I realized theres a button on the toilet that shoots water into your bum hole and cleans your butt for you. I haven't used it but am curious as to how it works, I'm just waiting for the perfect situation. And I'm not sure of anyone that's done it so I can't be sure that's in fact what he's doing. But then I heard a giggle amidst water sound. It was confirmed, he was spraying his butt with warm water. It's a fact.