Top Definition
A song that's stuck in your head that you can't get out for anything.
Person 1: Why are you acting so weird?

Person 2: Sorry, I have an earbug. I can't get this stupid Metallica song out of my head.
by danjapan7 June 06, 2010
A living bug that appears to be in the shape of an ear.
Someone better kill that EAR BUG!
by LargeVaginalSpiders March 24, 2011

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