Top Definition
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.
by ChiliBoy March 07, 2012

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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.
by jeff74008 March 01, 2012

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt