period

Uterus wants baby.
Female says no.
Uterus gets mad.
Uterus commits mass-murder.
Uterus hides the evidence in a female's underwear.

Jessica: Aw, crap. Why when I was wearing my brand new white shorts?
Ophelia: Your uterus committed a mass-murder?
Jessica: Ophelia, wtf is wrong with you.
Ophelia: sorry, you got your period. Way to be boring