A moron. Usually said behind the wrong do-ers back.
"Moohoo: I'm being a jerk. I'm being a jerk
Me: Unhun...

...later on...

Me: What a moohoo! *growl*"
by MOOnRoo April 09, 2006
1 more definition
Top Definition
An exclaimation cried when one is excited about eating
Moo-hoo that porterhouse steak looks delicious!
by Vieira August 12, 2008

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