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1) A cocky bacteria.

2) A form of describing an arrogant person by equating them with the cheese-like bacteria that accumulates beneath the foreskin of an unclean/unhygienic person.
Person A: What is up with that guy? He won't even stop talking on his bluetooth headset while the server takes his order!

Person B: Smugma.
by mercury895 November 15, 2010

Words related to Smugma

arrogant cocky conceited egoistic smug
Something reeeeaaally disgusting.
Eew, look at the smugma in that trash can!
by Aaron W. December 06, 2002