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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 04, 2009