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 17, 2003
Get the Boo-yahmug. by BeccaBoo September 29, 2003
Get the Becca-boomug. by I DO NOT KNOW HELP January 2, 2023
Get the Jilly boo boo bear<3mug. by this is not steve September 20, 2005
Get the boo hoomug. by Lenny April 10, 2003
Get the boo-urnsmug. by Jennifer Price December 19, 2008
Get the Boo Hamug. 