Procure por qualquer palavra, como blumpkin:
 
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."
por Cobra 26 de Janeiro de 2003
 
2.
the type of beer Homer Simpson drinks
pass me another Duff Mo
por :o) 25 de Abril de 2003
 
3.
Designated Ugly Fat Friend.
That 3rd girl is definitely the duff of the group.
por G 02 de Janeiro de 2004
 
4.
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.
por black flag 31 de Maio de 2004
 
5.
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!
por Steve0 20 de Agosto de 2004
 
6.
An abbreviation for 'Designated Ugly Fat Friend'. Often in many large groups of women (usually adolecents) there will be a D.U.F.F. as a means to look better by comparison.
I only hang out with her becuase I need a D.U.F.F., otherwise, she'd be, so, history.
por B.a.m 20 de Dezembro de 2005
 
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.
por stoner 18 de Junho de 2006