Mickey duff 

Mickey Duff was a well known boxing promoter whose name is now universally used as rhyming slang for marijuana.

Mickey Duff = Puff

If you want me to roll one up you’ll have to pass me my Mickey Duff.

Mickey duff by Loftier January 23, 2021

uppa duff 

get pregnant after a one night stand

did you hear about her? shes uppa duff

uppa duff by pierrr April 10, 2021

The duff 

Designated ugly fat friends

That one friend group that everbody avoides for obvious reasons

The people that sit near the benches at school are the Duffs of school

The duff by Smonky August 21, 2021

Daddy Duff

A fine gentleman descended from Father Duffy, who often times pushes 🅿️, and on occasion sleeps with women whilst off of the holy herb

Keath: "Yo its Daddy Duff"
Bitches: "Omg hes so hot"

Daddy Duff by QuickGiveThisManMouthToPenis February 10, 2022

Fletcher Duff 

A meme come to life, a Fletcher Duff is someone who personifies a number of memes often found on the internet without necessarily directly correlating with just one.

"Oh, that meme reminds me of something - i just can't put my finger on it"
"That must be a Fletcher Duff!"

Fletcher Duff by topg43 August 7, 2022

Michael Duff OUT 

The expression Swansea City fans use when Duff loses a game

Swansea lost again, Michael Duff OUT.

Michael Duff OUT by Krj97 October 21, 2023

come up duff 

A person who was a duff in their past and is now a hot glown up masterpiece

Guy 1: Damn heathers a come up duff!
Guy 2: Yah she used to be really ugly but now I really wanna date her

come up duff by Em's definitions August 14, 2017