momster 

What happens after your Mom counts to three.

Mom: 1, 2, 3
Child: Oh no, she's becoming a Momster

momster by Yermy Battled Warter December 8, 2016

momster 

A word used in conversation of siblings to complain about their mother. Comes from "mom" + "monster" = momster.

The momster is really angry tonight...

momster by Kitten123 July 28, 2005

Momster 

A mom who is extremely scary, or scary looking.

Boy: Dude, that hag is a total momster!

Momster by Notorious VIC January 25, 2010

momster 

A term of endearment for your dear mom.

"A puppy for Christmas?! Thanks Momster, it's just what I always wanted!"

momster by LaurenLEE December 21, 2008

momster 

An active member of the mommy mafia. (A mobster in the mommy mafia.)

"She's a new member of the West Oak Mommy Mafia - a momster in training."

momster by Regan and Lisa Brunsvold January 10, 2008

momster 

a woman who kills her own child

Casey Anthony is a momster.

momster by BrookeNM July 5, 2011

momster 

A momster is something your mother can turn into when she flips her shit and freaks out at you. This normally happens when:

1) you cut your own hair
2) you pierce yourself
3) when you break something

4) when you accidently say something in front of her that is more of a "friend remark"
or 5) when you accidently drop your guinea pig that she really loves to feed.

teenager: "hey mom nice new computer charger" *poke* *crash* D= "umm....te-he-he-he..." *runs in room...followed by a mom...*

Momster: "YOU %^&* TEENAGER touchin' on my effing charger!!!!! AHHHerrrrrrrHAhbdsfjdkjf..."

teenager: "0_o holy shit, my mom just turned into a momster and flipped her shit.. "

momster by Magentaa0_o September 12, 2011