What is Shu'up?
1.
A contraction for "Shut up."
Shu'up or I'll kill you.
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2.
A contraction of the words "shut" and "up." Pronounced "Shuh-up!" Usually said by short chubby women or especially bitchy people.
"Nuh-uh boi, you can't say dat!"
"But I wasn't saying any-"
"SHU'UP!"
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1.
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