Stands for Designated Ugly Fat Friend. A term used to describe a hot girls fat friends. Every hot girl has at least 1 Duff. Treating the Duff like a normal person may help your entry to the hot girls Vagina.
by twisted_walker November 13, 2006
Most commonly known as the girl that your hott date has to take along with her to the x dance. Your date won't go without her so she has to come along. The whole time she gets in the way of you two. Duff stands for designated ugly fat friend. Very terrifying moments have been caused by this race of people.
Bess: "Hey, we should go to Mikes this weekend."
Kailey: "Yeah, thats a great idea. We should take someone else, just in case things get a little too weird."
Bess: "Lets take Sarah. Shes always a good conversation peice."
Sarah= DUFF= Ugly, fat, facial hair, and zits
Everything every "man" wants
Kailey: "Yeah, thats a great idea. We should take someone else, just in case things get a little too weird."
Bess: "Lets take Sarah. Shes always a good conversation peice."
Sarah= DUFF= Ugly, fat, facial hair, and zits
Everything every "man" wants
by Stanely Jr. October 7, 2005
by pRoPeR-eNgLiSh May 17, 2007
by c0pen September 9, 2020
by weirdahhbitch December 19, 2022
A friend nobody really wants to be around but is tolerated and kept around for the purpose of buying alcohol
by 203.goon July 25, 2020
Only some new age duffhole would change the meaning of duff to dumb ugly fat friend or some dumb bloke’s puddin’
by Phil Logenist March 13, 2019