Meaning to beat some one up, to knock some ones ed off or to generally slap them about
For example I will duff you in when you get home cory
You deserve a propa duffing
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Fail to give appropriate praise to a feat of amazing skill or nerve.
dude, that chick is epic win.... why did he so duff the croquembouche??
(1)When you are/are not in a relationship. and have a person you fuck on the side. Side duffs manly are just people who you don't really care about, but just only to fuck.
(2) Someone who likes/loves you a lot and buys you stuff and is always promised sex, but never get any in return.
(1) monica was Bill Clinton's Side Duff
a duffle bag filled with illegal substances usually marijuana
I dropped my whole paycheck on a duff sack of that icky sticky leaf
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!"
Sitting on your ass and not doing anything.
The dude was so hungover Duff didn’t lift a finger.... he was pulling a Duff
"Hillary's duff"
"Go get you some of that duff over there"
"I bet that chick has a nice duff"