Top Definition
1.) (Internet slang) Shut da fuck up.

2.) South Dakota Farmers Union.
Don't believe me? Check out their website.
by Nigga, please. December 08, 2004
Shut da fuck up. Used when chattin in a chat room.
When u in the chat room and sumone talkin to and u dont wanna talk to them.

Man sdfu talkin to me.
by Donna September 27, 2004
Shut Da Fuck Up.

Used by gangstas on Habbo.
Habbo Gangsta: SDFU bitch! *stabs*
by cjisn199a May 12, 2009

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