Top Definition
In the same family as a Mercury Grand Marquis or Ford Crownvictoria. A fat powerfull car that is capable of doing burnouts and drifts but you'd never do it in public because it's actually quite embarassing to drive.
I took my grandparent's beastmobile out for a spin today.
I tanked up my mom's beastmobile yesterday.. it's like a botomless pit!
by Mr. Original July 28, 2011
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