Duff the DESIGNATED UGLY FAT FRIEND as a duff i would know its not fun ,sometimes u get ignored by ur friends and you feel left out
"I was a DUFF back in middle school."
by Vampie the queen October 20, 2021
Get the DUFFmug. 
The glue to a friendship. She/he will always support there friends no matter what. She can be a pain in the ass but everyone still loves her/him.
by ofiherjonfoqe[h November 5, 2018
Get the DUFFmug. A fine gentleman descended from Father Duffy, who often times pushes 🅿️, and on occasion sleeps with women whilst off of the holy herb
by QuickGiveThisManMouthToPenis February 10, 2022
Get the Daddy Duffmug. Designated Ugly Fat Friend .
In a group of friends there is always a duff that looks bad and make their friends look good . A duff can be easy to talk to , sweet and friendly . Everyone wants to be friends with them to get the hotties . A duff can be smart , funny but never cute or sexy .
In a group of friends there is always a duff that looks bad and make their friends look good . A duff can be easy to talk to , sweet and friendly . Everyone wants to be friends with them to get the hotties . A duff can be smart , funny but never cute or sexy .
by Rita majicos March 17, 2022
Get the DUFFmug. 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 January 23, 2016
Get the Duffmug. dick unimaginatively fat as fuck
by not duff November 20, 2018
Get the duffmug.