I remember a few years ago I was visiting Hungary and asked a guy over one afternoon. After we'd finished up, he went to take a shower and left the bathroom door open. I went to have a pee and saw that he was peeing in the shower, so I gave him the eyebrow. He looked at me and said "Hey! I'm pissing in your shower and next time, I'll piss over you!".
Needless to say, there wasn't a next time.