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To violently force one's beer from their grasp using a downward motion with one's fist; To force someone off balance whilst intoxicated; A statement used while in the act of forcing someone to go asleep.
"Hey are you OK?!? Here let me help you up...Fuck yo shit!"

Hey man can I have one of those vitamins? Fuck yo shit!"

by Bark at these fools July 10, 2008
V. Used as a term to let someone know that their stuff is unequivalent to their own. Originally stated by Notorious B.I.G.
by Jizzmenez February 14, 2006