High wee's: Game played by male schoolkids mostly in the school toilet.
The objective being to see who can leave the highest and wettest mark above the urinal.
Johny: Hey mommy guess what?
Mommy: What Johny?
Johny: I won at high wee's today.
Mommy: (Thought bubble)Wonder what high wee's are; mentle shudder; better not ask....