DUFF

Designated Ugly Fat Friend

Doesn't necessarily have to be fat, or ugly, but is less attractive than the friends she/he hangs out with. Men/woman usually befriend a duff to get closer to his/her friends. A duff mainly gets used for info and or help, and is often lead on mistakenly or purposely. Do not allow the duff to realize who he/she is and why you are using them, because you will 100% lose them as a friend. If you even care.

Guy 1: "Hey see those hot chicks? Except that one, she's so the duff."
Guy 2: "Yah man? Let's try to be her friend, maybe get some info on her hot friends"
Guy 1: "let's do it!"

by That1DUFF November 20, 2015

Duffed

The action of pounding a person's ass to the point their cheeks turn red without slapping them.

Yo man I duffed that bitch so hard her cotton picking grandma felt it dog.

by Mcduffing April 10, 2019

Duff Chuff

basically getting a girl up the duff and then sucking the baby out through a straw when possible

i fucking did the duff chuff to chelsea leigh last night

by ryan926 January 12, 2009

duffle bagging

stuffing your unerect penis into a condom and throwing it into a vagina

Tiffany: ...it feels loose, are you duffle bagging?

Near: yea, well deal with it.

by no really i am justice, May 17, 2009

duffman

FOR SURE the greatest mascot ever made in history. Period.

Duffman can't breathe! OH no!

by Hyper January 27, 2004

Duffer Doo

A Duffer Doo is a boy who gets his girlfriend in bed a ready for sex then epic fails with a condom not only once but TWICE and goes for the third until his girlfriend says it okay no more. Duffer Doos are generally virgins and don't know how to get any.

BK1 "Oh did you hear about that one kid?"
BK2 "Yeah he was such a Duffer Doo last year"
BK1 "Last year? He still is, what epic fail"

by zKaTaNaz October 25, 2009

duff

Designated Ugly Fat Friend.

That 3rd girl is definitely the duff of the group.

by G January 2, 2004