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 lemonberrypie August 4, 2017

by calumhood.com October 24, 2015

by greek tree June 29, 2011

DUFF means designated ugly fat friend
this person doesn't have to be fat and ugly to be a duff they are usually the one everyone goes to for information on one of the pretiter friends in the group
this person doesn't have to be fat and ugly to be a duff they are usually the one everyone goes to for information on one of the pretiter friends in the group
by makaaay March 28, 2015

by RenegadeLacrosse November 8, 2019
