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1.
(phrase) Often used to end a conversation; or as an attempt to suppress the stupidity of your friends, during or after their newest escapade.
Ex 1.
Johnathan: So can I get your number?
Bethany: Excuse me, do I know you?
Johnathan: Not as well as I'd like to know you. Hey baby, did you fall from-
Bethany: Quit your shit. (walks away)

Ex 2.
(You're at the mall, hanging out with your friends, and a couple start trying to get free gumballs from the vending machine.)

You: Y'all seriously need to quit your shit before you get caught.
by Kiete5 November 12, 2009