Duff

1.A incognito way to compliment a nice behind without being heard or looked at by the selective the female target.the term started in NJ in the summer of 2007 and is now being used by college students,frat brothers and perverts up and down the east coast!

2.Nice Big round mound of butt that defies the laws of physics.

1.Jimmy have you seen "Billy Duff"? (while pointing out a target)
2.I was strolling down the beach earlier and saw a "Duff".
3. "Duff" to the right!
4. That's quite a large "duff".

by Joemy mckenzanela November 19, 2010

Duff

designated ugly fat friend

"Your their Duff, they are prettier than you"

by heyo2 May 30, 2015

DUFF

When you see two hot chicks hanging out with a fatter, uglier woman you can pinpoint this woman as 'the DUFF'. DUFF stands for Designated Ugly Fat Friend. Hot chicks usually have a DUFF to make themselves look even better, when compared to their DUFF.

"That DUFF will make anyone look good."

by SmartyTarty September 23, 2015

duff

An awesome lay.

'I just had Duff ..... and it was the best sex ever' !!

by Eeevil March 14, 2003

Duff

1. The other friend who blends in the background

2. To TRY copy someones lifestyle

Duff: John dats a cool new haircut
John: Thanks you gay

2 days later...

Duff: John i got ur cool new haircut

by M15A April 11, 2008

duff

Designated ugly fat friend. The girl (or guy) in a circle of friends who is usually the least attractive in the group. Usually the one who provided the ride, designated friver or paid cover charge for the others.

Kim on Moesha is the DUFF.

by xzybit December 28, 2005

duff

British pudding

What ho, pip pip, my dear chaps and chapesses. I think I'll have some scrum-tiddly-umptious plum duff. Good show!

by SvenTheBold February 28, 2015