Duff

1. Designated Ugly Fat Friend
2. A more polite way of saying ass or butt

1. She's such a Duff
2. My Mom always tells me to get off my duff and go outside

by SauceMilliken July 31, 2017

Duff

Beer you wish you could have but never will.

I'm craving some duff right now bro.

by lemonberrypie August 4, 2017

duff

Dump
Ugly

Fat
Friend

That girl is the other's duff.

by Masker August 10, 2017

duff

dam ugly fucking friend

that girl is a duff

by mariodros September 7, 2017

DUFF

It means "Designated Ugly Fat Friend". They don't have to be any of those, but that doesn't mean they don't have friends more attractive than them. The DUFF is basically the least attractive one in the group.

"She's cute, but her friends are hotter. She must be the DUFF."

"He's the youngest in the team and acts as the Gatekeeper to the rest of the team. He's a DUFF."

"That teacher is being left out from other conversations... He's a teacher DUFF."

by WattpadBlogger September 21, 2017

Duff

To scarf down food at a rapid pace; to eat large amounts very fast.

After I smoke, all i want to do is duff and sleep

by Fontaine June 30, 2017

Duff

Designated Ugly Fat Friend is a person that you keep around to be more attractive and popular also known as the D.U.F.F

Two hot girls are sitting with a ugly girl. I feel bad for that Duff.

by Alize Marie September 21, 2017