An annoying exclamation, often uttered by planetarium-headed freshmen who think they're karate kid, often in a high-pitched, grating, nasal tone.
"Boo-yah! I'll slap you!"
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A person who steals my name, and has a obsession with it.
Becca-Boo stole my name and wont stop raving about it.
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Jill Roberts from scream 4,she is Jilly boo boo bear<3
Me:Jill Roberts from scream 4 is my Jilly boo boo bear<3
The noise people make at MR. BURNS.
As in, "They're not booing, they're saying 'Boo-urns'".
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When someone scares you so bad that you shit yourself
Guy 1: "BOO!"
Guy 2: *turtle head*
THATS boo shitin
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