1. (verb) When someone comes up behind you and sticks their thumb or some other object in you butt. Not so forcefully as to cause penetration, but with enough force to squeeze your cheeks.
Person A: "I saw whats her nameyesterday."
Person B: "Who?"
Person A: "You know, the brunette chick."
Person B: "Who?"
Person A: "Jo-Jo."
Person B: "Oh yeah, now I know who you're talkin about."