look up any word, like trap:
What uncut men can do if they wake up with a piss boner and pinch the end of their foreskin closed when pissing. The foreskin expands and becomes a piss balloon.

Best done in the shower, or over someone you either really hate or who finds watersports fun, as releasing the skin causes a real explosion of piss.
I had the usual morning piss boner, so I made a piss balloon on the way to the shower.
by rugbyman September 04, 2005
45 20