Jackpagne (pronounced "Jack Pain") is a drink consisting of excessive amounts of Jack Daniels Whiskey poured into a drunk person's champagne.

One then proceeds to belittle said person until they down the horrid concoction in a show of drunken and tragic bravado. This usually results in them "feeling tha pagne" shortly thereafter.
Dude. Mix that shit with Jack... it's called Jack PAGNE! JACKPAGNE!
by Mahesh January 5, 2006
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At new years, we were drinking jackpagne
by bobhizzle January 21, 2006
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