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1.
The area of effect that results from the explosion of Menstruation. Usually hits innocent bystanders or rarely teachers, pets, inanimate objects, cleaning supplies, facebook walls, and more.
Girl: *PMS explode*

Innocent Bystander: "Come on man, I just dry cleaned this leather jacket from last month's PMS splatter, I don't want to again."
by Poor Bystander August 16, 2011