Somebody who is a complete retard and doesn't know anything about what they're talking about.
Laura: I am so cool and smart, everybody loves me!
Dave: Shut the hell up you Kalbag!!
by PeteLeMeat February 2, 2014
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Someone who has surpassed the levels of jerk and asshole, close to have reached fucker or motherfucker. Not to be confused with douche.
Rob:He kept hitting on my girlfriend at the party, he just wouldnt leave her alone!!

Sam: God, what a kalbag.
by Samthecandleman November 5, 2013
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