When something goes very wrong, when the shit hits the fan majorily. Things all seem to go wrong or backfire in a row.
P1 - Man! They're finding out about all the pranks and fucked up shit we did this year!
P2- Dude, it's a shitsunami!
P2- Dude, it's a shitsunami!
by MAD IAN December 6, 2003
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