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when women are frequently in close proximity to each other and their periods become coinciding.
Abused Guy: Shit, these chicks are being total biatches today.... Oh wait.

Guy's Bro: What?

Abused guy: It's vaginement.

Guy's Bro: What?

Abused Guy: Vaginneeeemmeeennnnttt!!!
by obfooley February 09, 2010
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