When you pinch your foreskin and proceed to pee and fill your foreskin with piss.
Did you hear that Jimmy hit his girlfriend with the ol' water balloon from hell last Tuesday?
When a guy wraps a balloon over his dick, then he jizzes in someone's ass, ties off the balloon, and they fart it out, which usually causes it to pop. Get others involved and it's a water balloon fight!
Dude, Amanda is bored, should we get together and have a water balloon fight?
It was a wild night. I gave her a Philadelphia water balloon... Now I need a new mattress.
The act of urinating into a woman’s vagina during intercourse.
“ I am going to give you a Portuguese water balloon, if you complain one more time!”