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!"
by Anarchist October 18, 2003
by BeccaBoo September 29, 2003
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
by I DO NOT KNOW HELP January 03, 2023
by this is not steve August 29, 2005
by Lenny April 11, 2003
by Mike Muhammed Jones September 07, 2008