Swervin - fan-fuckin-tastic.
I've pissed all over the place, but the worst one was years ago when a group of us stayed at a mates house and I was woken up at 3am by a mate of mine pissing on my head. No, make that "in my face".
Seriously, it was a full and heavy blast right between the eyes, and the cheeky fooker had the gall to rear up on me when I started swearing at him and pushing him away.
My sister still recounts the tale of when she was woken up as a 7 year old by yours truly pissing in her school pencil box, and then shushing her when she asked what I was doing.