Video: Run For Your Life!
The Japanese have the weirdest prank shows. Here, a mob of people do their best to scare the hell out of unsuspecting passers-by or at the very least, freak them the eff out. Stick with it past the first guy, who hilariously doesn't react at all. The rest of them are awesome.
Before I watched this, I was worried it might lead to some kind of scary, bystander-trampling stampede...but it's actually very funny and pretty harmless. The second guy was my favorite! Gotta love Japanese TV!