A fork of Rural Dictionary
A period in a man's life where he feels the need to grow an unnecessarily excessive amount of facial hair with no logical explanation behind it.
"Nah fuck shaving man, i'm on my beriod"
That "period" you get after taking plan b. Symptoms include light bleeding, sore boobs, and cramps like the baby you don't want is punching your uterus.
"Hey Mallory! Wanna go to the club tonight?"
"No girl I can't, I've got that plan-beriod."