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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you are duff

omg Katey is such a duff in her friend group
by calumhood.com September 7, 2015
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To Duff Out; A momentary lapse in reality shown by a vacant stare into a world of blank.
You just duffed out!

Man sorry i didn't hear you i was totally duffing out.

I really duffed out on that one
by Tazan August 18, 2011
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"He wants to put his duff where?"
by TeamTripod July 8, 2009
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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 12, 2015
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