The Duff

When you are fucking a girl for the first time anally, you pull out too fast and the girl begins to shit uncontrollably.
Person 1: Dude OMG I heard you got with (girl's name) last night ..
Person 2: Yeah I'd rather not talk about it, it was a bad case of The Duff.
by The Duff Veteran November 09, 2010
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DUFF

Dumb(or Designated)
Ugly
Fat
Friend
But really, those describing words do it an injustice. Every group of friends has a duff. the one who's approachable, a little less popular or pretty, and doesn't quite fit in. But the friends in that group also have more friends, and could be their duff. So in reality, we are all duffs.
A boy in my grade called me a duff before I knew what it meant. I found out two seconds later from a girl next to me, that it meant Dumb, Ugly, Fat friend. But she also said that I'm none of those things, and what he had said was highly redundant. (She started laughing and said really loud,"But he probably doesn't know what duff means either, and that a few of those words perfectly described him!")

Duff is also described in the movie, "The D.U.F.F". I recently watched it -for MATURE audiences only- and it gives plenty examples.
by innocence_is_treasured;) July 29, 2015
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Duff

1. Bollocks. Rubbish. Not worth a fuck.

2. The bass player of Guns n' Roses, 10 Minute Warning, Velvet Revolver
1. I cant play that duff guitar you bought, its the cheapest lump of shit I've ever seen!

I was late for work again because my duff old Ford Fiesta broke down again!

2. Uh, well... Duff McKagan plays bass.
by Saviour of the real January 20, 2007
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duff duff

Its a person that is usually more big than normal ppl. she is usually brought to a party or something and they are used to make a person to look better. So maybe you are one maybe not. Ppl may joke around and say you are the duff duff. Sometimes ppl will be serous when they say that also. Another thing is tht they may not tell u that ur a duff duff.
lol Mia is totally the duff duff, no what abby is!!!! :p
by Krazy💖 September 07, 2017
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DUFF

Stands for Designated Ugly Fat Friend. A term used to describe a hot girls fat friends. Every hot girl has at least 1 Duff. Treating the Duff like a normal person may help your entry to the hot girls Vagina.
Hey, if your in with the Duff, Your in with the stuff!
by twisted_walker November 13, 2006
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DUFF

Most commonly known as the girl that your hott date has to take along with her to the x dance. Your date won't go without her so she has to come along. The whole time she gets in the way of you two. Duff stands for designated ugly fat friend. Very terrifying moments have been caused by this race of people.
Bess: "Hey, we should go to Mikes this weekend."
Kailey: "Yeah, thats a great idea. We should take someone else, just in case things get a little too weird."
Bess: "Lets take Sarah. Shes always a good conversation peice."
Sarah= DUFF= Ugly, fat, facial hair, and zits
Everything every "man" wants
by Stanely Jr. October 07, 2005
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Duff

Only some new age duffhole would change the meaning of duff to dumb ugly fat friend or some dumb bloke’s puddin
by Phil Logenist March 13, 2019
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