Cannapissed Share definition Flag To be heavily intoxicated due to smoking weed after consuming a large quantity of alcohol. A combination of being high and drunk. "Mate, we've gotta stop smoking weed after nights out. I am fucking cannapissed!" Cannapissed by Donovan_ December 10, 2013 0 0 Get merch Get the Cannapissed mug. Buy Now — $32.95 See more merch