DUFF

Designated, Ugly, Fat, Friend - this is a person in a friend group who is there to make everyone else look good.
girl 1: she doesn’t fit in with that friend group!
girl 2: yeah because she’s the duff!
by Thatsmarthighschoolgal November 24, 2019
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DUFF

Designated Ugly Fat Friend

Doesn't necessarily have to be fat, or ugly, but is less attractive than the friends she/he hangs out with. Men/woman usually befriend a duff to get closer to his/her friends. A duff mainly gets used for info and or help, and is often lead on mistakenly or purposely. Do not allow the duff to realize who he/she is and why you are using them, because you will 100% lose them as a friend. If you even care.
Guy 1: "Hey see those hot chicks? Except that one, she's so the duff."
Guy 2: "Yah man? Let's try to be her friend, maybe get some info on her hot friends"
Guy 1: "let's do it!"
by That1DUFF October 04, 2015
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Duff

A real term used in the heydays of Cocaine frenzy, 70s, 80s. Duff refers to that portion of your cocaine that consists of powder only, usually full of cut or anything else but real cocaine.
Shit, I won't buy from that dude again, this is all duff.
by Gojai August 30, 2017
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The Duff

Designated Ugly Fat Friend. A book written by Kody Keplinger. Also a movie. Basically it's the person in a group of friends that is less popular than the rest, isn't as pretty/handsome, or they are a bit thicker than the rest. Sometimes it can be a freshman with a group of juniors or seniors. The Duff can be someone other people go to to get information on the Duff's hotter friends.
Emily = The Duff
Hot guy : Yo Emily!

Emily : *omg a hot guy is actually talking to me!!*
Hot guy : hey, do you know if your friend Hannah has a date to homecoming? I want to ask her to go with me.
by NWinchester January 12, 2016
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duffness

duffness- A name you can call someone or something without offending them up front. Clumsy, silly, jerk, funny, asshole, comedian, joker, dork, jerkoff, lame, pussy, fatass, drunk, idiot, rapper, skelator, bandit, clown, jester, tattoo, pig, fool, cholo, ganster, thug.
Kid tells his mom: Look at that clown his a duffness!
A boyfriend tells his girlfriend: Your a duffness for acting like that.
Audience: Look at the rapper acting like a duffness after the show.
The man was at the resturant eating a burger like a duffness
The duffness got cought robbing a bank
by T.F. King #1 May 11, 2011
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Duff

Designated,ugly,fat friend.

You don't necessarily have to be fat,or ugly to be one. the duff is considered a duff when he/shes significantly less attractive out of the group of friends they hang out with and both boys and girls can be one.
They are often used to get information about his/her friends.
1# "Damn, those girls are hot...well except for that one"
2#"yeah..maybe we can get some info on them from her?"
also shown in the movie"The Duff" if you need a visual example.
by Guade April 02, 2015
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Duff

"Yo did you see Hilton duff Chino in the face"

"Chino is bleeding because he got duffed so hard"

"Some would should duff that kid, Chino, in the face"
by Douch B. September 28, 2007
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