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DUFF

It means "Designated Ugly Fat Friend". They don't have to be any of those, but that doesn't mean they don't have friends more attractive than them. The DUFF is basically the least attractive one in the group.
"She's cute, but her friends are hotter. She must be the DUFF."

"He's the youngest in the team and acts as the Gatekeeper to the rest of the team. He's a DUFF."

"That teacher is being left out from other conversations... He's a teacher DUFF."
by WattpadBlogger September 21, 2017
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DUFF

Designated Ugly Fat Friend .

In a group of friends there is always a duff that looks bad and make their friends look good . A duff can be easy to talk to , sweet and friendly . Everyone wants to be friends with them to get the hotties . A duff can be smart , funny but never cute or sexy .
I got her number from the duff .
by Rita majicos March 17, 2022
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DUff

Something that tastes nice.
Oooooo, this chocolate is duff”

“This pizza is duff”
by E L L E T123 December 13, 2017
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Daddy Duff

A fine gentleman descended from Father Duffy, who often times pushes 🅿️, and on occasion sleeps with women whilst off of the holy herb
Keath: "Yo its Daddy Duff"
Bitches: "Omg hes so hot"
by QuickGiveThisManMouthToPenis February 10, 2022
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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
by Astr1767 June 14, 2015
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duff

dick unimaginatively fat as fuck
a way to describe zackery duff
by not duff November 20, 2018
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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
by E.Christin January 23, 2016
mugGet the Duffmug.

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