Duff

To scarf down food at a rapid pace; to eat large amounts very fast.

After I smoke, all i want to do is duff and sleep

by Fontaine June 30, 2017

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 27, 2017

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

DUFF - Designated Ugly Fat Friend.

Doesnt have to be fat or ugly. The weak link in the group of girls. The least attractive but it the most approachable. Use her to speak to the girl in group you want to score with.

"Damn Cindy so hot, how do i even get a chance to speak to her?"

" its simple my friend, get to know her DUFF Sarah & youre in"

by Jamattack July 17, 2016

DUFF

Designated ugly fat friend

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

by Ashkiba February 5, 2018

Duff

A blonde chicks vagina.

"Hillary's duff"
"Go get you some of that duff over there"
"I bet that chick has a nice duff"

by Fagboyslim88 January 13, 2017

duff bag

A monster tard you work with. Usually nothing good comes out of there mouth. Comparable to douchebag

Duff bag just moves around the office soundung drunk

by Going6to6hell6 January 19, 2017