An adaptation to STFU, which has included a "fucking" to it. Basically translates to "Shut The Fucking Fuck Up!" Has no real purpose except to emphasize that you want the certain someone(s) to shut up.
by monkeygodkiller January 02, 2009
Get the STFFUmug. Jakki: "So I heard this really funny joke yesterday! But... I forgot it. It was really good though."
Calvin: "Dude, stffu, why don't you stop eating so much sugar and go jump off your roof and try to fly"
Calvin: "Dude, stffu, why don't you stop eating so much sugar and go jump off your roof and try to fly"
by Batmanxisxrad February 19, 2009
Get the STFFUmug. when George W. Bush talks you can say StFFU
by JEFF_HARDY_GIRL April 24, 2010
Get the stffumug.