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a number so great it defies proper quantization. Used when appropriate details about the exact scale are unknown or unknowable but the phenomenon is assumed to be of a considerable magnitude.
Q: How many times did I tell you not to talk with morons?
A: Dunno, must be a fuckzillion.

I've got a fuckzillion problems but a bitch ain't one.
by phikappa September 23, 2010
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