The World’s Largest Super Soaker! Is this the biggest water pistol ever? We think so! 🤣 Beano Team Last Updated: August 2nd 2017 Youtube star Mark Rober has made the world's largest water pistol! You might remember his attempt at the world's largest Nerf gun His latest invention launches water at over 200 miles per hour That's fast enough to slice up a sausage! It's 40 times as powerful as your average super-soaker (Which is SERIOUSLY cool!) And it looks like a SMASHING way to cool down!