The act of having multiple men cum in the girl's asshole and then having the girl take a shit next to a high powered fan so that all the cum bursts out and gets carried away by the fan...resembling a blizzard
Dude the party last night was insane, i heard some girl was blizzard shitting all over the walls
by mdubscasa11 October 28, 2010
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A somewhat rare and ghastly occurance where the forces of nature collide at high pressure, collaborating a chain reaction of shit.

also:
A series of bad things that happen in a very rapid, sometimes simultaneous, manner.
Jim Lahey: Feel that?
Randy: Feel what, Mr. Lahey?
Jim Lahey: The way the shit clings to the air, Randy...
Randy: Shit clings to the air?
Jim Lahey: It's already started, my dear good friend.
Randy: What's started, Mr Lahey?
Jim Lahey: The shit blizzard
by shit blizzard December 14, 2017
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