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A more accurate name for the menstrual cycle in highly strung females. A lot of women will simply get on with it, however there are a significant proportion that just go full on fucking crazy. Experiences vary, but phrases such as "DON'T speak to me like that!!" and "Oh, well why don't you just fucking LEAVE if I'm so hard to live with!!" are common.

Men are expected to accept this, or they will suffer horribly. These women use the fact that they are menstruating, have just menstruated or are about to menstruate as a kind of "get out of jail free" card, which leaves them free to be psychotic bitches without fear of reprisal, which makes people hate them more and more all month long.

As a bystander to this train wreck, expect screeching, expect tears, expect no sex and expect to want to kill someone more than you ever have before.
"John, do you wanna go do something?"
"Daz, it's midnight! What do you expect us to do?"
"I don't care, my missus is in the middle of her Mental Cycle, so if I don't leave the house, I'll kill the bitch in her sleep"
by MagickDio March 06, 2010
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