Rhett & Link will slake your thirst for goofy, brand-inspired comedy in the “Ultimate Water Taste Test,” a wonderfully wet episode of their “Good Mythical Morning” YouTube show.

The guys, best known for their brilliantly bad local commercials, compete against each other to identify seven varieties of water. They sample five brands: Dasani, Evian, Fiji, Smart Water and Blk Water. (“It’s not from a river in Alabama,” Rhett quips, but infused with fulvic powder, “whatever that is.”) There’s also pond water from Echo Park in Los Angeles and H2O straight from the tap.