Two hot chicks at a bar will have a really nasty fat ugly bitch hanging out with them, refered to as a "DUFF".
"Wow that fat DUFF is hanging out with those two attractive ladies, too bad."
A simple pudding eaten by 19th century sailors. This was given to the crew once or twice a week at the most if they were working hard, or if the captain wanted to motivate them. Consisted of flour, boiled water, and whatever available fruit or molasses. Considered to be quite a luxury.
Having been unruly, the crew did not receive duff last Sunday.
UK usage
1) Something that's flawed or faulty
2) To duff up, to assault, beat up etc
He sold me a duff DVD so I duffed him up.
A unattractive female who is always seen with another female who is marginally more attractive. It is usually impossible to score with the hotter female without the duff receiving her fair share of the action.
Damn! I so wanna tap that chick.. but goddamn, she always has that duff Nicole hanging off her. Look at that fat mess!