A short tempered man
The male term for PMS, or bitchiness
Sammy: Would you like me to get a tampon for that manstration?
It is believed to be due to a random influx of testosterone in the male's body. It is the driving force behind all creation, all civilization, and all invention.
Symptoms include, but are not limited to:
-Wanting to punch inanimate objects for no specific reason
-Pulsing headaches that can only be treated by punching things
-Voracious hunger, best remedied with large quantities of steak.
-Periods of intense intelligence/ambition followed by periods of ignorance/lethargy
Romulus: Sure man, creating an empire that has a big ass legion must be the equivalent of punching dozens of inanimate objects.
Julianus: True shit. That's one of the best cures for Manstration.