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Acronym. An internet slang abbreviation of Do Me A Favor and Fuck Off. Synonymous with "Fuck off" and "Go Away".
Hey, go sit down. In fact, DMAFFO, would ya?
by Fallforawhile August 08, 2017
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Oct 30 Word of the Day
A trick played on a fellow athlete where the open hand smacks the target's testicles with the knuckles in a sharp, wrist flicking motion.
"Dude, I sack tapped Brandon, and now he has the whole team trying to sack tap me"
by Chris M July 07, 2004
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