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1 definition by Poor Bystander

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