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 .
designated ugly fat friend
the more approachable one
you are duff
omg Katey is such a duff in her friend group
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
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
1. Designated Ugly Fat Friend
2. A more polite way of saying ass or butt
1. She's such a Duff
2. My Mom always tells me to get off my duff and go outside