Watch Bill Gates Trick Jimmy Fallon Into Drinking A Glass Of Poop Water

Earlier this month, video of billionaire Bill Gates drinking water sourced from human waste went viral (as opposed to bacterial). Why? Because science! To promote the groundbreaking and inexpensive technology, Gates brought two numbered samples of drinking water to The Tonight Show with Jimmy Fallon for a taste test. After a bit of reverse psychology, Gates and Fallon cheered one another and drank their glasses dry before the contents were revealed.

(Via The Tonight Show with Jimmy Fallon)