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 18, 2012
pissed at men syndrome
Dad to son: Do you know what PMS is?
Son: Dad, I'm not a little kid anymore. Means "pissed at men syndrome."
by TaylorFTW August 01, 2012
The act of getting high and eating everything in sightt, until you realize that your stomach cannot hold anymore food and that you are about to gag
Dude, i got super stoned and ate everything in te fridge, Im suffereing from PMS (Post Munchie Sydrone) and i have to take a major sh*t
by king blue June 17, 2011
A time of the month just before a girl's period where she's either really horny or really angry.
Girl: Let's get it o....get away from me, douchebag!"
Boy: Damn you, PMS.
by Anonymous Teen Girl January 26, 2011
Parked Motorcycle Syndrome

When you have not ridden your motorcycle in a long period of time, and are going through withdrawal.

Usually occurs during the winter.
Guy: Man I wish I could go riding!

Other guy: I see you have PMS.
by JordanMn July 10, 2008
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!

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 11, 2014
Not just a PRE Menstrual Syndrome, but a PRE, PRESENT or POST - all year long - Menstrual Syndrome.
In need of some chocolate, Im PMSing.
by hilanimal November 26, 2013

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