Costanzaed It--the art of taking a seemingly sure thing and somehow fumbling it away, usually due to a temporary and false sense of empowerment or boldness.

Based on the Seinfeld character George who repeatedly snapped defeat from the jaws of victory.

Also: present tense "Costanza It", or to "Pull a Costanza"
1. Man, I sure Costanzaed It with that chick. We were sucking face and I asked her if she and her sister would go for a ride on the threeway freeway. She ditched me faster than a cat can lick its ass.

2. Dude, you have a Recession Beard. Don't Pull a Costanza on the job offer by asking for Rock Star Parking and mo money.
by ditchdigger May 1, 2009
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Virgin adult male needing the teats of mother to guide them through life.
No way would I date him, he's a total fuckin Costanza.
by =zbwar= August 9, 2007
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A girl polish-italian girl
Dude: Ehy, is that girl american?
Guy: Nah man, she's a Costanza
by Cstnz666 October 29, 2020
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When you have anal while eating a McRib. Both are such rare occurrences that when they come together it is truly magical.
Johny gave his wife a Dirty Costanza.
by boxandthefuzz May 5, 2017
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Awesome vocalist of the band named Against the Current.

- Somebody as pretty as a phoenix biting a rose
example. Oh my GOD! I want to see Chrissy Costanza D:
by ChrissyForTheWin June 21, 2013
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A close friend of Jerry Seinfeld in the show 'Seinfeld.' He keeps all of his receipts in his wallet at all times, which in turn he keeps in his back pocket. His wallet is so massive that, when sitting down at a resturaunt, he must put a stack of napkins beneath the other pocket to level himself. Played by Jason Alexander.
Hey, did you see the Seinfeld rerun last night?
Yeah, it was the one where George sleeps under his desk, and Jerry calls a bomb threat.
Oh George Costanza...that George Costanza, when will he ever learn?
by Scott Irving January 2, 2006
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n. kuh-stan-zuh nap. Nap under one's desk while at his or her place of work.
I stayed out too late last night so I will definitely need a Costanza nap at work tomorrow.
by FearLightBeerFlight July 15, 2011
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