Duff

The action of folding someone, or knocking them out

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

by Slump November 21, 2019

Duff

Knock someone clean out

Imma duff his dumbass

by Hatehatty6 March 08, 2020

Duff

Dumb ugly fat fuck

Hey, look over there, it’s a duff, why is they walking over here.

Oh look, there’s the duff, haha

by Thisguy1999 March 13, 2022

DUFF

Designated Ugly Fat Freind

Jim: Bob you are my designated ugly fat friend (DUFF)
Bob: I'm not that fat!

by z108108 February 18, 2015

DUFF

Designated ugly fat friend

“Trudez is Tims DUFF”
“Luciano will always be a duff”

by Ashkiba February 05, 2018

Duff

dumb ugly or fat friend...

Becky invited her duff so she doesnt get wasted and blows any willing cock within sucking distance

by NorCal Slanger March 15, 2017

DUFF

Dumb ugly fat friend

That dude is the duff of the friend group

by Tiasg March 08, 2015