Duff

designated ugly fat friend

"Your their Duff, they are prettier than you"

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DUFF

When you see two hot chicks hanging out with a fatter, uglier woman you can pinpoint this woman as 'the DUFF'. DUFF stands for Designated Ugly Fat Friend. Hot chicks usually have a DUFF to make themselves look even better, when compared to their DUFF.

"That DUFF will make anyone look good."

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duff

An awesome lay.

'I just had Duff ..... and it was the best sex ever' !!

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Duff

1. The other friend who blends in the background

2. To TRY copy someones lifestyle

Duff: John dats a cool new haircut
John: Thanks you gay

2 days later...

Duff: John i got ur cool new haircut

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duff

Designated ugly fat friend. The girl (or guy) in a circle of friends who is usually the least attractive in the group. Usually the one who provided the ride, designated friver or paid cover charge for the others.

Kim on Moesha is the DUFF.

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duff

British pudding

What ho, pip pip, my dear chaps and chapesses. I think I'll have some scrum-tiddly-umptious plum duff. Good show!

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Duff

drop kick

jake is a duff

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