Top definition
a combined form of the 2 words zombie and apocalypse, basically a time when the world gets fucked over by undead humans and other such undead things
I watch the fucking timesquare new year special every year just to make sure i know when the Zombacalypse is happening

The Zombacalypse is happening just ask Ted
by Eric Green bitches January 22, 2008
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The vengeful act of crapping on a lover's chest while they sleep.

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