Boy: hey

Girl: SHUT THE FUCK UP!

Boy: wtf did i do? youre PMS-ing

Girl: im sorry i love you!

Boy: i love you too

Girl: SHUT THE FUCK UP YOU BITCH!
by TheUsual3 April 24, 2010
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The reason why a girl is in a really bad mood or upset. <<< guy's definition and it's WRONG!!!
Girl: Shut up Mike, why do you have to be such a dick?
Mike: Do you have PMS or something?
Girl: Dammit! Forget i even asked!
Mike: It's PMS isn't it?
Girl: No you fucking loser!
by mysterious_writa September 25, 2004
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The mythological belief that before menstruation women all act exactly alike (i.e. all women become evil or irrational). The myth has its roots in reality. Prior to menstruation women may have mood changes due to hormonal imbalance and in reaction to physical discomfort. The myth that all women become other-worldly beings is a result of inherent sexism within society and the male of the species' jealousy of the female's ability to give birth.
Woman: "I am a monster."
Man: "You must be PMSing."
by jenlight January 24, 2008
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oh my god, she was PMSing so bad at school with guys!
by wishitwouldhappen April 16, 2010
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Pi ssed off at
M ankind
S yndrome.

Occurs a little before or during a girl's period. It basically makes you feel like crap for anywhere from 2 to 5 days.
Let me put it this way, if men had to deal with this, the international suicide rate would be a lot higher.

It can causes any or many of the following symptoms: mood swings, low self esteem, headaches, cramps from Hell, bloating, snapiness, fatigue, muscle/joint aches, food cravings, heightened thirst, nausea, stomachaches, more frequent crying, insomnia, boob tenderness, acne break outs, or even nightmares.

I don't suggest teasing your girlfriend while she's go through this.

Girls may celebrate its completion with ice cream.
Jeez, PMS blows. This headache's been going on all day!

Dude, don't mess with Stacy right now, she's PMSing. She'll bite your head off!
by The Wondering Wanderer October 5, 2011
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Post Missionary Syndrome. Often times when Mormon boys return from their missions they act and react awkwardly in everyday situations due to their detachment from real life situations for the past two years.
"See that guy over there? He just got home from his mission and he totally has PMS"

"Dude, would you relax around these girls? They're supposed to have the tampons not you. You must have PMS"
by colbyd87 September 19, 2012
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Pre or Post-Midnight Snack:

It is a humorous term intended to be confused with the scientific Pre-Menstrual Syndrome (the original PMS), especially when used by a male.
Mike: Man, my PMS was really delicious.
Joe: What...?
Mike: My Post-Midnight Snack.
Joe: Wha-? Ohh.

Phil: I think I'll have my PMS soon.
Linda: Jerk! Are you making fun of me?
Phil: What? No! I'm just gonna heat up my Pre-Midnight Snack!
Linda: Hahaha, that's... clever.
by JHJH123 October 15, 2008
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