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1 definition by cansecofan

To break a financial engagement.
Dad, for my 20th birthday, was going to buy me a car, but when the time came he greenballed me.

Jose thought it was a good idea to buy the preschoolers ice-cream, but greenballed them at having to drop a twenty.

Son: Grandpa John is getting us tickets to WrestlePalooza!
Pop: Ah, that's a greenballer.
by cansecofan July 26, 2009