1. premenstrual syndrome-PMS A varied group of physical and psychological symptoms, including abdominal bloating, breast tenderness, headache, fatigue, irritability, anxiety, and depression, that occur from 2 to 7 days before the onset of menstruation and cease shortly after menses begins.
2. a school in canada (Pitt Meadow School..seriously it does REALLY exist!)
3. a natural situation when a girl have their period and they become bitchy and become sharp (same as #1 but alittle different)
"o man...she is PMS-ing 24/7!!!!!"
"i can't stop PMS-ing!!Ahhhh~"
"i go to P.M.S"
"go P.M.S! you guys are so gonna win this basketball game!"