duff
Duff
Designated. Ugly. Fat. Friend
Ex. Britny is the duff in the group
Lisa and jen are hotties or the atravtive one and britney is ugly and fat compared to them
It can be guys (not alway ugly or fat) lets say they are freshmen and are like wingmen to upperclass men
*They are the ones who the girls go to ask if the jocks or alist guys in the group are single

The 2015 movie "Duff" is about a girl who is the duff in her group of friends at highschool who was unaware that she was the duff and was set oit to change it

"Duff " is not a positive thing to be called
by just a teen in 2k15 April 1, 2015
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I see a lot of post say it’s not always just the designated ugly fat friend but the less attractive one. And I’d like to throw into play many attractive women use makeup and a lot of attractive women who may not use makeup sometimes want to be uglier. Pretty women and also not so attractive women who may not dress up or do their makeup usually have been sexually abuse and do not want to look pretty then them due to the predators seeking them out. And also noting the ones who do as well. Sometimes the uglier one in the group of friends is the prettiest or grows to be the prettiest inside but many men only date or fuck her to cheat and fuck her hot friends not realizing some ugly things are beautiful inside if you nurture it. So if your saying the word duff or any new term for it reflect on the ugliness in yourself for thinking that way before you assign a term to someone you base off looks. Don’t judge the book by it’s cover.
Man I thought she was a bitch and a duff but when my looks began to fade and others did too I realized she was the most beautiful and bloomed in time. While my hot chicks rotted inside. Leaving me with the duffs inside. Which made me a duff in all reality. Asshole people
by TwistedTaboos February 3, 2021
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Madi and lily (designated, ugly, fat friend)
Madi and Lily are such duffs!
by YLYILS April 13, 2018
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It is a word you use for that one friend that you don't like. It means DESIGNATED UGLY FAT FRIEND
Kim: Ugh why is she always hanging around us
Nicki: Yeah she's just a DUFF
by Golden_Goddess February 12, 2015
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