Top Definition
i am not exactly sure but it is in the song "alpha dog" which is sung by fall out boy. actually quite a good song! megalomainia is when you become obsessed with grandiose or extravagant things or actions. i have no idea how this involves this song.
"alpha dog and oh,oh,omegalomanic,ah,ah, ah,ah,ah,ah! alpha dog and oh oh mega megaaaaa ah, ah ah ah ahhhh! welcome to the neeeeeew deja veiu! i can almost see the wizard thru the curatains! o
by fall out boy. April 04, 2010

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