An explosion of sin. Refers to excessive “bad behavior” after a time period of abstaining from such behavior. Usually occurs in concurrence with a vacation or some time away from responsibility but not always.
Charlie: We have 2 days left until Christmas break, no work! I've been sober for a week!

Marc: It's true. Get ready for a sinplosion, we're binge drinking for 4 days straight.
by prefer_not_to December 22, 2010
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