Refers to someone who is an egomaniac and a jackass
egomaniacal jackass: Hey fuckers! I bet I can run 20km faster than you can and still have to energy to kick all of your asses!
non-egomaniacal jackass: Fuck off dude, I could knock you off your feet, stop being an egomaniacal jackass just to impress Brittany.
by benormous April 14, 2006
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