duffing up is the female equivelant of beating up, or kicking ass. It's not so violent in a sense, and to a certain degree. It usually involves excessive screaming, clawing, pushing, and shit-talking.
ali is effing duffing up mandy, alis guna win, mandys so screwed.
by Ali Lansing July 16, 2006
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1.) To drink two Icy-Cold Duff Beer at once.
2.) To be accompanied by both Haylie and Hilary Duff
1.) Homer Double Duffed his way out of Moe's.
2.) Some dudes would love to be Double Duffed.
by Jestr October 27, 2007
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A Mag Duf is an anoying person who's best friend's anre calked T and M.
"Hey that girl is annoying and her best friend's are called T and M she is a Mag Duf".
by Tapollah December 17, 2021
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The sexual act of penetrating a female's vaginal cavity whilst they vomit.

partnered with the act of Vom-Chuffing
"whilst she was bent over throwing up he began Vom-Duffing her to her suprise"
by RahimTom June 3, 2009
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A guy who is a combination of a dufus and a douche bag. Thinks he's too cool to be considered as a "dufus" but dorkier than a "douche bag."
I saw this major duf bag walking on campus the other day wearing a ear piece phone.
by ArtsyT April 26, 2011
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chicks fighting by pushing and a lil' pinching goin on
by bIg Hairee Schlong September 26, 2003
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Im Hella faded right now i dont know how im going to make it home tonight. i dont even know where the fuck i parked at. I'm Duffed Out
by Stacky Warbucks May 29, 2016
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