by ABJS March 10, 2021
Get the Momstermug. 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.
by GergeManDoc February 17, 2021
Get the momstermug. 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 9, 2023
Get the step momstermug.