Designated Ugly Fat Friend is a person that you keep around to be more attractive and popular also known as the D.U.F.F
by Alize Marie September 21, 2017
by gap slammer November 05, 2006
Harry:look at them! The perfect triangle!
Mads: You are right! Spencer, Abby and the other girl.
Harry: haha the duff?
Mads: yes
Mads: You are right! Spencer, Abby and the other girl.
Harry: haha the duff?
Mads: yes
by E.Christin November 18, 2015
Duff is a quiet man when you first meet him yet is incredibly observant and always listening. He takes his time in both thoughts and actions, but in the end is always ready to share the very best of himself. Duff is strong yet gentle, firm yet kind and mushy. If you are lucky enough to have a Duff in your life, then you are guaranteed a funny and generous confidante who will be by your side forever.
by Duckie1970 December 09, 2023
by TechWhiz November 03, 2016
"An ugly chick i know complained that i wasn't open minded enough about her genderless kitten, and that i was being sexist, and was also guilty of raping her."
"Oh she must be part of DUFF."
"Oh she must be part of DUFF."
by mahaaham May 28, 2015