DUFF

1.Damn, U're Fucking Fabulous: The friend of the popular people that everyone looks down on but is actually fabulous./2.Designated Ugly Fat Friend: The friend of the popular people that goes unnoticed and doesn't seem to exist.

"Ugh, the DUFF is hanging out with her popular friends again..."
"She's fucking fabulous, who are you to prejudge, you unnoticeable twat."

Bianca is fabulous, bitches.

by PensPencilsAndRulers November 05, 2017

DUFF

Duff stands for designated, ugly, fat, friend. In your group there are usually some hot people in there and then there's that one member that is the least attractive and that person get used to get info about other people

Guy at school : dude those girls are smokin except for the other one

Hot Girl in group: is the captain of the football team still single
Duff: yeah
Hot girl: thanks bestie

by perfectsayings February 22, 2015

Duff

To Fart, flatulate, passing intestinal gas, let one go, squeeze cheeks, float an air biscuit.

"Has someone done a duff? It smells in here."

by Animal Muppet June 10, 2009

The Duff

A person of great power and an ardent supporter and believer in Polygamy who enjoys the company of three or four women rather than one

Your man over there has 6 Putinis around his waist he’s doing The Duff

by Pimp Daddy Mack October 04, 2018

DUFF

Designated Ugly Fat Fuck. A girl that your hot friends bring so you can't get any good pussy.

"Dude, were you able to bang Amy last night?"
"No! I was so mad; she brought her DUFF Caroline!"
"That sucks..."

by Bo C. May 06, 2007

DUFF

Stand for Dumb Ugly Fat Friend

My friend Dora is a DUFF!!!!!!!

by Rodneyeeee Munch April 22, 2008

DUFF

Designated Ugly Fat Friend.
typically seen at a bar or night club with any attractive female. They are put on this earth for one reason, to cock block. They usualy give you dirty looks while you talk to there friend then tell you that shes to drunk and makes the girl leave.
YOU WILL ALWAYS SEE A DUFF WITH ANY GOOD LOOKIN CHICK!

"Dude i was so gonna fuck that chick tonight but her fat fuckin duff mad her leave."

"God Damn look at that fuckin DUFF!"

by finothebamf August 18, 2008