Describes someone who gets really excited about something too early/quickly and jinxes you. (Also another term to describe a premature ejaculator.)
Wow! I heard that you might be getting that promotion! That's fantastic! I'm so excited for you! I've already told everyone I know!

Geez! Don't be a premature congratulator or you'll jinx it for me!

by Siorse House December 23, 2005
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Where you wish people happy *event* (birthday and such) earlier than it actually is
Premature Congratulation. Mother's day was sunday, I showed up at my moms house with flowers on saturday .
by CheeseGames June 3, 2017
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When someone celebrates a windfall or personal accomplishment prematurely and it ends up failing or blowing up in their face. Similar to Premature Ejaculation.
Man 1: "Did you hear about Rick? He had to return that new Mercedes he bought after the Newark deal he thought he closed fell through"

Man 2: "Geez, he should know better about premature congratulation."
by LEBRON IN DA HOUSE June 9, 2009
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