When a woman is going through the pain of one of her internal organs shedding a layer. This may cause her to have a lower tolerance for incompetence and is why pmsing has such negative connotations.
If you happen to be the incompetent dingwad that pissed off a pmsing female, be kind to those around you and don't go off complaining about "how much of a bitch she is".
Caution: if a girl is angry don't just ask her if she is pmsing. Believe it or not that is one of the most infuriating things someone can say. Its like saying she cant be angry. Even if some shit just went down.
Jerry: god Penny why are you so angry? Are you pmsing or something?
Penny: no I'm not pmsing I have a genuine reason to be angry!

Later....
Jerry: oh my god Penny was such a bitch today. She got angry at me for cheating on her. Can you believe it? I bet she was pmsing or something.

Steve: Didn't she say she wasn't? And why wouldn't she get angry? You were being a dingwad.
by D.L.O.T.U. June 12, 2014
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A powerful spell that women are put under about once every month, which gives them the strength of an ox, the stability of a Window's OS, and the scream of a banshee. Basically, man's worst nightmare.
OMFG! SHE HAS PMS!!! RUN FOR YOUR LIVES!!!! *explosions and screams*
by PSisTEHsuxxors February 23, 2004
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PMS (Pre-Menstrual Syndrome) or PMS-ing (Verb) has a wide array of symptoms but happens typically one to two weeks before someone’s period. As someone who gets periods and is probably PMS-ing right now, I want to tell people who don’t experience PMS that we cannot control how angry, sad, happy etc we get so please try to be understanding as we don’t mean to be mean and it’s hard for us. Of course you don’t have to go all out but just being willing to listen is enough.
Friend: Hey, are you okay?
“Yeah, I’m just PMS-ing”
Friend: Oh well it’s okay, I’m here if you wanna talk!
by spoiled_rich_milk February 28, 2022
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A curse. A symbol of unfairness. An uncontrollable Hell that fulfills all the things that can make a woman sad: fatness, ugliness, and ickiness. It occurs a week or days before a woman's period.

During this time, men will drive women to become lesbians for the simple fact they are insensitive and cynical towards this cruel suffering that women go through. Oh, so your mad because you can't get no ass, freak?

PMS will make a woman wish she was never born female. Penis envy can occur.
I have PMS as I write this. I want to die. And I don't just have any ol' type of PMS. I have a severe, psychotic form of PMS called PMDD that causes me to have temporary bipolar disorder. I'm not kidding.
by twistedbabydoll August 5, 2007
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I had realized that mostly guys had written about pre menstrual syndromes and FYI:THEY DON'T EVEN GO THROUGH IT!!! And, not every female goes through PMS that effects their mood. I read that it actually depends how much estrogen intake you have and some foods are neuro-transmitters, resulting in moodswings.

So,let me just get to the point: PMS (pre menstrual syndrome) is caused by the uterus shedding its lining because a female's monthly egg isn't fertilized and dies.

TAKE THIS FROM A FEMALE, PPLZ!
Guys, girls with PMS won't kill you!!!
by randomgrl December 21, 2006
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Period mood swings. It is baically when a girl is on her monthly and she is going through a period of time where her emotions are jyst getting the best of her.
Why is she on the floor in a ball crying?
She is going through PMS.
by memyselandi November 22, 2016
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When a girl has certain symptoms before/during their period. EX: headaches, bloating, feeling fat, feeling icky, mood-swings, tiredness, etc.

GUYS WHO THINK THAT THEY GO THROUGH SO MUCH WHEN A WOMAN IS PMSING are selfish dicks who don't realize what a woman goes through and will have to go through for most of their life. Think about it our way. If you were bleeding from your ass and had to have a pad on your butt, wet and sticky from blood for 4-6 hours, OR have a tampon stuck up your ass, and still have to have a pantyliner in just in case, you'd be pretty bitchy too. It's even worse at school or work, where you barely have any time to change it, so there's a possibility that the pad will have to stay there for the WHOLE DAY. Not to mention the constant fear of your period leaking through, or the cramps. Imagine having someone kick your balls repeatedly, and while that's happening, your SO is complaining about how he has to hear you whine. All the guys think it's SO horrible, because they get yelled at occasionally and have to deal with mood swings. You don't even know the half of it.

Another thing. We HATE it when guys just assume we're on our period, even if we are. It's like saying that girls are incapable of being mad without it having to do with their menstrual cycle.
Girl: Ugh. I'm so mad!

Boy: Oh... ::wink:: Are you... You know.

Girl: What? I can't just be mad because he broke up with me? Gosh...

Boy: SO YOU ARE PMSing.

Girl: ...No. Just shut up and go away.

Boy: Gosh, don't get so mad just cause you're on your period.
by HiMySweetheart~ February 2, 2010
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