duff 

Designated Ugly Fat Friend

A DUFF doesn't actually have to be fat or ugly, just less attractive than the people they are with

Also, a person can be one of the hottest in one group of friends, and the least hot (and therefore the Duff) in an other group

The duff is the less attractive friend and therefore easier to talk to than the hotter friend you are trying to score

duff by Astr1767 June 14, 2015

duff 

designated ugly fat friend
the more approachable one

you are duff

omg Katey is such a duff in her friend group

duff by calumhood.com October 24, 2015

Duff 

Designated Ugly Fat Friend.

The friend who make her/his friends look good and perfect.

Harry:look at them! The perfect triangle!
Mads: You are right! Spencer, Abby and the other girl.
Harry: haha the duff?

Mads: yes

Duff by E.Christin January 23, 2016

duff 

designated, ugly, fat friend

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

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"

Duff by Jamattack July 17, 2016

duff 

D.U.F.F a friend that is used to make yourself appear attractive or popular

wow really their friendship group has a duff wow they are so shallow poor duff

duff by TechWhiz November 2, 2016

duff 

The stuff left on the bottom of your weed bags. All the stems, crystals, and leafs. Often used as a cheaper alternative to buds in baking. Though often mistaken as good, and used in joints and bowls. Known to be sold for as cheap as 30-40 dollars an ounce.

Hey bro, got any of that duff? I need to make another's batch of weed brownies.

duff by fitzy_keegs January 13, 2017