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."
by Regan and Lisa Brunsvold December 28, 2007
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momster

a woman who kills her own child
Casey Anthony is a momster.
by BrookeNM July 04, 2011
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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.. "
by Magentaa0_o September 12, 2011
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Momster truck

Oversized school run SUV capable of going off-road but will never scale more than kerb. Perfect for driving over kids on bikes and other lesser vehicles.
Sorry I'm late. The road was jammed up with stupid momster trucks doing the school run.
by Miscusername July 26, 2024
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Momster truck

Oversized and unnecessary school run SUVs that are capable of going off-road but will never scale more than kerbs. Perfect for driving over unseen kids on bikes and lesser vehicles.
Sorry I'm late. Traffic was snarled up with the school run momster truck parade.
by Miscusername July 26, 2024
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step momster

A nasty stepmom who always has a resting bitch. Face is unpleasant and treats, her husband and her husband’s family like garbage but her own family can do no wrong.
My step momster got her own kids something lovely for the party but only got my kid a crappy cheap trinket.
by Cat daddy 043 April 09, 2023
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momster

Momster is when a scary and angry man does a satanic ritual and becomes what we call a momster. Momsters can be very dangerous but you will know when you meet one because they are sus as fuck.
(bob): You seem sus omg are you momster?
(momster): *eats him*
by GergeManDoc February 17, 2021
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