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1. When a girls clothes are so far beyond the scope of "slutty" that a more powerful word must be used.

2. The event of being surrounded by multiple people who are either dressed slutty or are confirmed to be slutty.
Check out that girl at the bar, she's a total slutastrophe.

Ladies night at the club was a full on slutastrophe.
by Twisty McFisty June 04, 2010
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Noun: (considering the definition of catastrophe is "a momentous tragic event ranging from extreme misfortune to utter overthrow or ruin") a slutastorophe is a complete shit-show to end all shit-shows, only with sex
(in response to seeing Becca completely naked and sprawled out on the floor AFTER seeing a bunch of frat boys leaving the room and giving each other high-fives):

"Oh my GOD look at Becca! She used to be such a nice girl, but now she's just a total SLUTASTROPHE"
by Decadent October 28, 2011
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