Monsteration 

When a woman's "time of the month" includes harsh, rude and at times abusive behavior

She started her time of the month and her whole personality has changed from "MONSTERATION"

Monsteration by CALBOY1 July 28, 2019

Montevation 

The motivational efforts of school pride shown by students attending Monte Sant' Angelo in Sydney. Invented in 2008/ 2009 by the senior leaders. Montevation is characterised by sudden outbursts of spontaneous dancing, on stage at school assemblies or not, accompanied by loud music.

That senior girl was really montivating at assembly last week with her awesome dance moves!!!" "GET MONTIVATED" "I <3 Montevation"

Montevation by shinyness May 28, 2010

manstration

When a man is going through his monthlies

"You are a bitch right now - are you on your manstration?"

manstration by Jeremy W September 25, 2005

Monsterating 

When a woman's time of the month makes her extremely grumpy/angry/hungry. Inspired by "Modern Family".

Luke: Did you see Alex cry about the commercial, then scream at me for not bringing her enough ice cream?
Phil: Yea she's totally monsterating right now, stay away.

Monsterating by ChiliBoy June 17, 2012

Monsterbation 

1. The act of masturbating under another's bed/ in their closet then scaring them.

2. The act of masturbating to a monster character(s).

3. To dress up like a monster and then proceed to masturbate.

1. Charlie pranked his roommate Doug by way of monsterbation but felt embarrassed when he realized that he had scared Doug's girlfriend.

2. Charlie has a monster fetish and has been caught in the act of monsterbation.

3. After a night of failed attempts with women on halloween, Charlie decided monsterbation in his zombie costume was the only way he'd get some.

Monsterbation by m.fucci November 5, 2009

monsterating 

When two or more women in a household are synchronized with their menstrual cycles.

I have to get out of the house this weekend. My wife and daughter are monsterating.

monsterating by jeff74008 May 28, 2012

monsterbation 

The act of masturbating while going "RAAAAAAWWWRRR!" Like a monster/dinosaur

Max decided to experiment with monsterbation, but the noise made his mom come to his room, and discover what he was doing.

monsterbation by Maudlin La An April 1, 2010