In your opinion? Why does it make you laugh?

Any of the fat people falling down or Japanese pranks get me. Scary pranks are pluses too.
Oh, the Batsu games are hilarious as well.
But I'll post the newest one that made me die.

YouTube - Whose Line US - Greatest Hits (Tapioca)


He was so serious... LMAO!!!!!!!!!!!

Go to 1:25 in the video.