Duff'd (v) - The act of getting used and or manipulated by an attractive, mentally unstable person of the opposite sex. Unfortunately this includes an abundance of flirting, profound mixed messages, and sexual enuendos that don't actually lead to SEX, merely the illusion that it will. The Duff usually ends by the Duff-er getting back together with their original girl/boyfriend, leaving the duff-ee with a killer case of blue balls/dry-gina.
abv. for Designated Ugly Fat Friend; Term men use to describe a fatter, less attractive friend, a woman brings with her to a party or social gathering to make herself look better by comparison. In some cases the more attractive woman will not "put out" for any male, unless one of his friends "takes one for the team" and "hits" the Duff.
Duff Delish refers to "a good buzz" or a "really good time". Specifically refers to a drinking/going out/drug buzz. "Duff" refers to being under the influence of substances and "delish" means a nice taste. Has become rather popular around Dublin, Ireland recently.
A Scandinavian drinking game that can be played by two or more players.
Played in a circle the participants hit a beer can against their head twice with considerable impact (hence duff duff) and then pass the same beer can to their left. The next participant does the same and that continues until the can springs a leak.
The person whose head caused the leak then needs to open the can and down it.
The player to the loser's left takes a fresh can and the game continues.