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A 'beffie' is your best friend forever (BFF).
This person often provides for a reason to not kill yourself and continue living life.
Beffies often get well maggot together, and have mad times in Rottnest during Leavers.
"Look mate, i'm gonna have to ask you to not talk to my beffie like that, or i will fucking kill you."

"Dan Wilde and Ben Smith are mad beffies."
by dan wilde November 27, 2006
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