Former NASA engineer and all-around awesome guy Mark Rober has earned himself a Guinness World Record. He built the world's largest Super Soaker water gun, and it's AWESOME!
I used to have Super Soakers as a kid, and LOVED them! What do I have to do to get invited to a pool party at this dude's house?!
On second thought, I might not want to get hit by this thing. It shoots water at 2600 PSI and it comes out at over 270 MPH. Ouch!