Top Definition
A way to knock a bad idea. Derived from the ESPN commercial with Chad Johnson. Slight change of "Boo Ya!".
Stu: "...a little shake 'n' bake, then Boo-Ya!"
Chad: "Boo-No"

Andy: "Hey we should hang out today."
Nate: "Boo-No."
by boo9radley November 07, 2006
v. to push an individual with extreme force when he or she is not expecting it.
The other day I was running with my girlfriend and she boonoed me really hard!
by unclealgebar December 03, 2011
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