Top Definition
A sincere, meaningful promise with full intention of carrying out its parameters. Lasts for 24-48 hours or until tempted to break it, like swearing to never drink again after a night of excessive drunkenness.
"Dude, I will never, ever, eat another Six Dollar Burger."

"I understand your disgust, you are a foul person. But that sounds like a Hangover Promise to me."
by MSTRKRFT84 August 16, 2009
5 Words related to Hangover Promise

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