PMS
PMS in the textbook is premenstral. PMS can also stand for Pretty Mean Sister or Pissy, Moody and Snappy.
Hey man, can I crash at your place for a couple of days? Yeah, she's having that special time..... Guy 1: Man she is pms Guy 2: premenstral? Guy 1: no she's pissy, moody and snappy Guy 2: ohhh snap
By b&m1788