A messy bowel movement that resembles flour pudding. Derived from duff, a flour pudding steamed or boiled in a cloth bag.
by OneCrayDood January 15, 2014
Get the duff it in the shittermug. 
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. Guy 1: Damn heathers a come up duff!
Guy 2: Yah she used to be really ugly but now I really wanna date her
Guy 2: Yah she used to be really ugly but now I really wanna date her
by Em's definitions August 14, 2017
Get the come up duffmug. (1)When you are/are not in a relationship. and have a person you fuck on the side. Side duffs manly are just people who you don't really care about, but just only to fuck.
(2) Someone who likes/loves you a lot and buys you stuff and is always promised sex, but never get any in return.
(2) Someone who likes/loves you a lot and buys you stuff and is always promised sex, but never get any in return.
by Pititfulfilth April 1, 2011
Get the Side Duffmug.