Know this:

A cockroach can live 9 days without its head. It only dies because it cannot eat. (Which is so gross. Cos the world is a better place to live in without these cockroaches. If only good people can live without their heads. Hahaha.)

It is impossible to sneeze with your eyes open. (I'm going to try it the next time I sneeze.)

Starfish have no brains!