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the all knowing - or seemingly all knowing - creep in the crowd who feels the need to promote themselves solely on the basis of of their little bit of focused knowledge.
"Because of my deep knowledge and experience, I will enlighten you on the correct way to view this perspective."

(thought bubble of everyone else in the room) "blow it out your ass, smug fucker"
by groundedsteve December 26, 2011
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2
a offensive term used when you are being robed
leave me alone you smugfucker!
by sweet May 24, 2003
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