Period cramps 

Mother nature being a bitch.
Pain mother nature I flicts on females for fun.

These period cramps are killing me!

Period cramps by Eatingahotpocketrn June 14, 2018

Period question mark 

A woefully cringey grammar error, where the individual whom is typing an question end up putting a period (.) and them a question mark at the end of their sentence.

What has my life come to.?
(period question mark)

Period question mark by Somebodyyouusedtokno May 7, 2017

period jeans 

A pair of loose jeans that a female wears when she is on the rag.

"My girlfriend gets angry and bloated when she is on PMS patrol. Her period jeans and negative attitude totally killed my boner."

period jeans by Big Freeze UFL January 31, 2010

Period bush 

The bush a woman grows while on her period, because there's no point in shaving until it's over.

When he felt her period bush, he knew she wouldn't be dtf for another day or two.

Period bush by MishyTheFishy May 16, 2011

period syncronization 

The fear of any and every man ever to exist.

Jon: Dude. Julie and Jen's periods are syncronized.

James: RUN. PERIOD SYNCRONIZATION HAS STARTED.

period syncronization by Booknerd818 November 29, 2014

Period Drill 

A drill one can undergo with their pre-teen daughter to prepare for the onset of menses.

I thought my daughter was having her period, so we did a period drill. Turns out she wasn't, but now we know exactly what to do.

Period Drill by productman July 16, 2016

Period monster 

Something you call women when they are really mad to calm them down. Should always be used if you have an upset wife/girlfriend.

My girl was being all mad and attacking me, so I called her a period monster and she settled down and started feeding me grapes.

Period monster by Tyler Peniston June 3, 2020