Celebrity Squares GUESS WHO! 12/22/2012 5:15 AM PST BY TMZ STAFF There are three things you'll need to find out who is behind this mixed up pic.1. The patience of a Buddhist.2. The speed of Usain Bolt.3. The ability to click a mouse on the picture above.Good luck. More FUN Photos! Rapper AP.9 -- I'm Not Afraid of Ice-T ... and I May Have Banged His WifeJessica Simpson -- Check Out My Black Dress ... Perfect for Hiding BabiesGuess Who This Lil' Lady Turned Into!