The word used to identify a stepmother that you don't like, get along with, just plain despise. 1st coined in the film St. Elmo's Fire, used chiefly by Demi Moore's character, Jules.
by Tommyt August 25, 2008
Get the stepmonster mug.A step mother who is a nightmare to the other children. Known to fight for the mother title in many sinister ways. Pouts when the real mother is in contact with the child or grandchildren. Has no concern about how that looks to anyone..kids, grandkids. A total "one-upper" in every breath
Dammit, my stepmonster Lisa wont leave my mother alone. I mean who do she thinks she is, she has never been and will never be a mother to me
by llp1964 April 3, 2009
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Get the step monster mug.A single turd so long that, when sitting in the bottom of the toilet, it appears as a mythical sea serpeant sticking its head out of the water.
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