9 definitions by Fryen Pan

Abbr. for "Shut up slut"
Blair: Can't believe I hooked up with that guy and gave him my number...
Jenny: SUS, you love it.
by Fryen Pan June 27, 2011
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1. A noise that a Bos primigenius (aka a cow) makes. Usually cows moo in a deep low tone, but the type of moo varies.

2. A synonym that retarded kids use to say, "what?"
Alycia: Did you hear about the flying fish that got eaten by a squirell?
Norman: Moo??!
by Fryen Pan November 26, 2009
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