Dihydrogen Monoxide is good old H20, aka “water.” The term, unfamiliar to many people, is often used for the purposes of pranking the gullible, such as a 2013 April Fools’ Day announcement by a couple of Florida DJs warning of Dihydrogen Monoxide coming out of faucets. So it’s nice to see the Wizard of Id on the cutting edge of humor. Ha! The drunk never drinks water!
But hold on a moment… that glass is clearly full of a colorful liquid. Hell, it almost looks like Tang. I’m guessing the water supply in this faux-medieval environment is highly polluted. Better stick to beer, pal. The alcohol will take care of the pathogens.