when a man is in a particularly unpleasant mood, for no appearant reason.

A short tempered man

The male term for PMS, or bitchiness
eg: w loots - manstration
by synergyxcoza January 14, 2011
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When she just got back from a week at her grandmother's house and hasn't been touched in forever so you just take one for the team and after like the sixth time in a half hour that you've cummed it doesn't even feel good at all it's just incredibly painful but you keep going because she's still horny and finally on the seventh time when your dick is just shouting out "STOP STOP" you have a weak hellaciously painful nothing of an ejaculation and realize that blood just came out your dick.
Doctor: You've ruptured your vas diverenze, seminal vescicals, popped one testical and backed up your epididimus with coagulated blood and seman. if you have sex again in the next year you will die. How did this happen?

You: Manstration
by The Lonliet Monk December 31, 2008
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when a man has taken it hard in the ass and needs to wear a kotex to absorb the fluids,is in a bitchy mood and won't have sex for a week
what is that lump in his shorts,he must be manstrating. that poor bastaed
by JEFF KOWALSKI March 13, 2008
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Manstration is when a man becomes bitchy and theres some blood involved...

the word comes from man and frustration.
Billy and Jim got into a fist fight... I think its due to Jim's manstration... I dont want to clean up their mess.
by Au. December 19, 2015
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The socially awkward pass-through, crotch stain common to active hemorrhoid bleeding; similar to a ‘menstration skid’, but more common to the opposite gender.
Damn, check it out. Do you think we should tell him that he’s got a funky thing goin’ on in his shorts?
Let’s give it a bit of time; wait until he starts leaving manstration marks on the furniture.
Right. That way he won’t think that we’re just fuckin’ with him.
by YAWA October 4, 2021
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Men who behave like they have excessive levels of estrogen.
He will really manstrate when he has to pick up the last job .
by edyer June 22, 2017
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