Definitions by FistyCuffs

upside your head 

Pimp slaping someone... The "up side" of your hand or back-hand is used instead of the palm. Commonly used when pimping women and they get out of line.

Pimp: Baby u owe me $500.

Pro: uhuh papa it is only $300...

Pimp: Dont make me upside your head!

upside your head by FistyCuffs October 2, 2006