A fluid or gelatinous solid, usually thick and oozing as it seeps out of something that wasn't broke, but is about to get fixed anyway. May also refer to an electronical device which has decided to let the smoke out. Popularized by youtube personality AvE of bum fuck nowhere, Kanuckistan.
AvE, upon causing something to leak: "RELEASE THE SCHMOO!"
by bzacon March 13, 2017
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When you don't know the words to a song, the word schmoo is used to replace the words that are not known. It can be abbreviated to 'sch' or add 'ey' to the end to give it more versatility.
The YMCA song: "YMCA! Sch sch sch sch schmoo schmoo. YMCA-A!

The Bubba Sparx song I found you, Ms. New Booty: "I found you, Ms. New Schmooey!"
by Notorious M.A.T. June 20, 2006
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Schmoo -
1, An insanely cute creature that follows you round and helps you with stuff.

2, An expression of sympathy,or condolance.

3, Used Psionically to wish someone good luck, or to help them get better.
Awwwwww Schmoo!!

Healing Schmoos coming your way....
by Jon May 23, 2003
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petname for a females most intimate bodypart
My schmoo is itching.
by denlilla May 29, 2008
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A balloon like toy that became a craze in the '50's. Schmoo's appeared in the cartoon series "Lil'Abner." They invaded the town.
I know this is ancient history to you, but a schmoo was a great toy, and fad. And if you don't care, I say screw you, schmoo.
by Joe Renzetti September 16, 2003
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a party pooper. someone who sucks all the fun out of a situation for no reason. thinks they are very cool and smart, but they just sound bossy and boring. often a simp.
Dude, we've been planning this for months and now you aren't gonna do it because you think we'll be out too late? You're such a schmoo.
by notschmoo July 30, 2020
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Stuck to a rock, the schmoo develops into an adult sea urchin.
by malurus April 13, 2005
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