Duff Gen

Incorrect information. May have had origins in the RAF.

That tip you gave me for the 2.30 at Sandown turned out to be duff gen.

by Gareth May 30, 2004

DUFF

Designated, Ugly, Fat, Friend - this is a person in a friend group who is there to make everyone else look good.

girl 1: she doesn’t fit in with that friend group!
girl 2: yeah because she’s the duff!

by Thatsmarthighschoolgal November 24, 2019

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