What is Duff?
1.
Designated Ugly Fat Friend
Two hot chicks at a bar will have a really nasty fat ugly bitch hanging out with them, refered to as a "DUFF".
"Wow that fat DUFF is hanging out with those two attractive ladies, too bad."
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2.
the type of beer Homer Simpson drinks
pass me another Duff Mo
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3.
Designated Ugly Fat Friend.
That 3rd girl is definitely the duff of the group.
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4.
A unattractive female who is always seen with another female who is marginally more attractive. It is usually impossible to score with the hotter female without the duff receiving her fair share of the action.
Damn! I so wanna tap that chick.. but goddamn, she always has that duff Nicole hanging off her. Look at that fat mess!
5.
UK usage
1) Something that's flawed or faulty
2) To duff up, to assault, beat up etc
He sold me a duff DVD so I duffed him up.
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6.
a teenage pop star with absolutely no talent.
hillary duff sucks
7.
marijuana that has already been run through a vaporizer at least once.
all i've got left to vaporize is some duff from last week, but we can still get pretty high.
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