When bitches be going crazy due to their menstrual cycle. Periodbrain may cause: irrational thoughts, spontaneous crying, extreme anger, random freak-outs, freak-outs over boys, the creation of unrealistic scenarios and just pure bitchiness.
My Periodbrain was so bad today I couldn't stop crying or punching things.

Dude your'e acting nuts! Do you have Periodbrain again?
by browneyedchick September 20, 2013
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