V. To plan a sexual encounter and back out soon after, to stand up.
He said he wanted to be with me, but then he duffed out and changed his mind.
DUFF - Designated Ugly Fat Friend.
Doesnt have to be fat or ugly. The weak link in the group of girls. The least attractive but it the most approachable. Use her to speak to the girl in group you want to score with.
"Damn Cindy so hot, how do i even get a chance to speak to her?"
" its simple my friend, get to know her DUFF Sarah & youre in"
Desiganted Ugly Fat Friend. A common acronym used in male cliques. Used to refer to the girl that the "hot chicks" bring along to distract the "Wingman" (every male clique has one, his job is to intercept the DUFF.) so the ycan have the more desirable males of the group.
"Dude, you sooooo got the DUFF tonight."
Hey, look over there, it’s a duff, why is they walking over here.
Oh look, there’s the duff, haha
Designated Ugly Fat Freind
Jim: Bob you are my designated ugly fat friend (DUFF)
Bob: I'm not that fat!