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Internet slang for "Grinding On Floor With Your Mum" as a silencing response to ROFLMAO (Rolling On Floor Laughing My Ass Off)
Created by internet gaming legend "Mortal Sentinel" (Tom Eggerton) as an easy, cryptic comeback to the legions o' n00bs
"ur so ghey! ROFLMAO!"
"GOFWYM..."
*silence*
...
"pwned"
by Supremo January 18, 2008
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