the crazy, severe hangover you get the morning after ballin out of control and consuming copious amounts of champagne.
The very painful, main symptom that occurs whilst experiencing a champagne brain is the unmistakable feeling that the bubbles from the drink are eating your brain alive.
After Michelle finished having it rain on her, Diddy bought her 5 bottles of Cristal. Too bad they both woke up with champagne brain.
by saschakhan June 19, 2008
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