Duff

V. To plan a sexual encounter and back out soon after, to stand up.

He said he wanted to be with me, but then he duffed out and changed his mind.

by Laurie-Bell February 1, 2009

duff

(D)esginated (U)gly (F)at (F)riend

You are a duff
We have a duff in our friend group

by huoon October 14, 2021

duff

designated, ugly, fat friend

That fat bitch over there, with those other girls, is so ugly... she is such a duff.

by Liz O'nya August 15, 2016

Duff

Designated Ugly Fat Friend

Usually the unattractive one in a group of friends. Basically the outcast

All my friends are beautiful, this means I'm the duff😭😔💔

by Starbeauty November 28, 2020

Duff Brain

An Über fluky dudely/dudette, that drinks to the point of being a problem for others. He/she somehow gets girls/dudes even though they either have a pencil for a penis or the chesapeake bay tunnel for a SNATCH. Aswell as being a drinker, they have terrible hair cuts, and think that they rule every city they find their way into.

Can be used as a Noun or Verb.

Drinks of choice: Fortays (40's), Vodka in a 2 liter, or colt 45
Music: Bad Euro-trash House stuff
Permanent residence: Ocean City, MD or NJ

1. dude one: "Dude, why the fuck did we bring brent.... he is duff braining so hard tonight... it's funkin' ruining my night."

dude two: "I know, it's my bad, but you won't have to see him again till next summer."

2. dudette one: "Ugh, you are way to drunk Brittany, you are a funkin' duff brain and you even knew I wanted that kid..."

dudette two: "OMGEEZ WTF alls I was gonna do was willis with him all night."

by brew thru her August 29, 2012

Duff

The action of folding someone, or knocking them out

“Man I’ll duff your shit”
“Oh shit, Amari got duffed

by Slump November 20, 2019

Pulling a Duff

Sitting on your ass and not doing anything.

The dude was so hungover Duff didn’t lift a finger.... he was pulling a Duff

by Doepke April 23, 2021