One who alters the brand on cattle and steals them; a cattle thief who ‘duffs’ the cattle by altering the brand.
10 years ago, we were just a couple of cattle duffers.
by szaki February 2, 2012
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A Duffer Doo is a boy who gets his girlfriend in bed a ready for sex then epic fails with a condom not only once but TWICE and goes for the third until his girlfriend says it okay no more. Duffer Doos are generally virgins and don't know how to get any.
BK1 "Oh did you hear about that one kid?"
BK2 "Yeah he was such a Duffer Doo last year"
BK1 "Last year? He still is, what epic fail"
by zKaTaNaz October 25, 2009
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Derived from the Australian term for a cattle rustler (cattle duffer).
A lesbian who preys upon straight females.
She specialises in the naive, recently jilted, suggestible, drunk, "cute" etc...She can be either singularly,or a combination of; mercenary, sneaky, subtle, surreptitious, overt, sustained, touchy-feely, duplicitous.
"Dwayne, I'll get the drinks, and while I'm gone you keep that muff duffer off my woman."

"Babe, I don't care about the carbon footprint, you're not carpooling with that muff duffer."


by Malonetogether April 5, 2009
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Used to describe a retarded mountain goat but can be used to discipline small children
"Oh Dave your child is such a silly duffer"
by Dickmyeat August 5, 2015
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A homosexual term, when you shit and piss in a bottle, put a balloon on the top, and set it out in the sun. When the concoction is completely fermented, the balloon will be completely filled and you "Huff" it in. Hallucination immediately sets in, and you pass out 5 minutes later.
I hear that Homosexual man is a frequent "Hookie Duffer"
by Rusty Shacklefords December 28, 2007
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A term used by Australian sailors for personnel who comes back to the dessert table to get a second serving of dessert.
My name is Able Seaman Bloggs and I'm a double duffer
by Makisig1032 June 28, 2015
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"silly duffer brother" or "SDB" for short can be used as a noun or adjective to describe an extremely idiotic person (also a nitwit or fool) or an extremely idiotic action.

SDB combines Aussie slang (duffer) and incorporates a reference to the world renowned Duffer Brothers (American twin brothers who write and direct science fiction films, horror films and television shows - including Stranger Things).
Girlfriend: "I can't find my phone again!"
Boyfriend: "It's in your hand you silly duffer brother (SDB)!"
by Horatio Bumbus July 27, 2017
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