Top Definition
The crazy mothering machine of a disturbed man-child. She has no real emotion apart from extreme apathy. She also may look a bit like John Travolta from Hairspray. She may confuse a hatred for videogames with a hatred for teenagers in general.
Man--yo mama is such a bevtron!

My bevtron yelled at me for playing battlefield 3 at one am last night. It was New Years eve.
by KuroUsagi November 30, 2012
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