1 definition by Mr.Reman

Shut yo momma up.

Usually when someone says something gay, retarded, or you just don't give a fuck about what they're saying.
Person1: Aye bro, Twilight is not that bad of a movie.....just saying

Person2: Symu !

Person1: OMG Brian goes out with Jennie now?! What a douche, going out with that tramp. I'm so gonna so kill that slut with her--

Person2: SYMU!!!
by Mr.Reman September 09, 2011

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