Duff

The ugly friend you bring out with you.

Ian is not a Duff

by QuinnIsAJag January 19, 2020

come up duff

A person who was a duff in their past and is now a hot glown up masterpiece

Guy 1: Damn heathers a come up duff!
Guy 2: Yah she used to be really ugly but now I really wanna date her

by Em's definitions August 14, 2017

duff

Dump
Ugly

Fat
Friend

That girl is the other's duff.

by Masker August 10, 2017

Side Duff

(1)When you are/are not in a relationship. and have a person you fuck on the side. Side duffs manly are just people who you don't really care about, but just only to fuck.

(2) Someone who likes/loves you a lot and buys you stuff and is always promised sex, but never get any in return.

(1) monica was Bill Clinton's Side Duff

by Pititfulfilth April 1, 2011

Duff

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.

by Laurie-Bell February 1, 2009

duff

designated ugly fat friend
the more approachable one

you are duff

omg Katey is such a duff in her friend group

by calumhood.com October 24, 2015

DUFF

Designated Ugly Fat Freind

Jim: Bob you are my designated ugly fat friend (DUFF)
Bob: I'm not that fat!

by z108108 February 18, 2015