A fork of Rural Dictionary
(Da Ugly Fucking Friend) A term to describe the less attractive females another female will have in company to make her seem more attractive or just a less attractive friend to more attractive female. (Originating in Bear, Delaware)
Jon: "Hey! did you see that girl that just walked by?"
Brandon: "Which one?"
Jon: "The one in the middle bro!"
Brandon: "Oh yeah, but she's only a 6 on a scale of 1-10 without those DUFFs."
Jon: "Yeah her other friends were pretty ugly."