This word was created in an episode of Futurama.

This word means two monsters, aliens, etc. having sex with each other while standing up.
"I Guarantee That By The End Of This Night You'll Be Doing The Vertical Monster Mash"
by Soldier 91 January 24, 2005
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Used by Phillip J. Fry from the TV show "Futurama" to describe sex.
Leela let's ditch these aliens so they can do the Sideways Monster Mash.
by Zoidberg101 March 01, 2011
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When you bang a chick that has had multiple abortions. You know. Cause it's a graveyard smash.
Yo, dat loose chick from work had another abortion and got dumped by her man. Imma try to Monster Mash.
by Def my real name May 23, 2021
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The Michigan Monster Mash happens once a year on Halloween night. It is a event where many people at a Halloween party get together in costumes and have a mass orgy. The best part of the Michigan Monster Mash is that everyone is in a costumes and no one knows who is who. So next Halloween go to a local part and do the mash ;)
The Michigan Monster Mash happened in Ann Arbor Michigan on Halloween night in 1999, and has happened ever year since.
by DR124 September 18, 2011
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When a person has a bowel movement while showering and proceeds to force it down the drain with his/her foot.
I could tell from her glistening brown toes that Ethel had done the monster mash this morning.
by Stinner July 06, 2018
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