Diarrhea that burns. Usually occurring after a hard night of drinking or food poisoning, being sick, etc.
Don't go in the bathroom, I just had an extremely uncomfortable acid waterfall in there. It smells horrible.
by Sammy Garlough July 27, 2008
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Acid Waterfall • acid • acid bath • acid reflux • acid rock • acid face • acid test • acid casualty • Acid-Crunk • acid dick