Top definition
A more subtle way for men to state they would like to have sex with a girl if they could.
Paul: "Holy shit! Look at that brunette in the short skirt. I would totally pee in her butt."

Zack: "Yep. #1 in tha bum."
by GvilleZack2 August 05, 2011
Get the mug
Get a #1 in tha bum mug for your buddy Sarah.