Very funny, and after watching quite a few of these videos over the years I am convinced Japanese people are all insane.

Trying to find one I saw years ago, a prank on a tv show where a guy books into a hotel, he's in bed asleep and a team of commandos burst into his room spraying the walls with (blank) bullets, smoke bombs going off, lights flashing, soldiers screaming at this poor bastard, and as quick as they came in they all took off. The poor guy was hiding behind a cotton sheet, only his eyes visable, shaking like a leaf.
As if a cotton sheet is going to protect you from machine gun bullets !
It's a wonder he did not have a heart attack.