duff 

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.

duff by stoner June 19, 2006

Duff 

v. the act of punching someone in the face.

"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"

Duff by Douch B. October 11, 2007

DUFF 

A different person, approachable,friendly , not defined by fashion and looks and takes little attention to their appearance. they really do not have to be fat and ugly, just different.

that duff makes me look so hot when we are together,her small booty makes mine look so big

DUFF by babylove_spongy June 4, 2015

duff 

Dark brown or black cannabis remaining in a vaporizer bowl after vaporizing. The duff, which still contains some THC, is recycled rather than discarded by stingier enthusiasts.

Whoa, don't toss that duff, man! I'm saving that to make hash.

duff by John Woods October 17, 2008

Duff 

The leftover weed from a depleted vaporizer. It is often used to make canna-butter or sprinkled on food as an edible, since the the THC has been activated by the heat of the vaporizer.

Stoner 1: Damn, we’re out of weed!
Stoner 2: I got this duff , we could just eat some of that.

Stoner 1: Aw, hell yeah, let’s get blazed.

Duff by teaoutdoors June 16, 2021

duff 

The unattractive girl that a hot girl keeps around to make herself and her friends look better. Stands for "Dumb Ugly Fat Friend". THe DUFF tends to be a cockblock or a third wheel. See also "Grenade".

Why do I always get stuck with the DUFF?

duff by G. Sherman August 11, 2003

duff 

a teenage pop star with absolutely no talent.

hillary duff sucks

duff by hillary's ex April 12, 2004