Jpanese game shows generally ask people to do things that are physically impossible. Nobody actually expects them to do them, and they are entirely ridiculous so it's really just about laughing while seeing how close the people can come before failing.
But once again, Lionel Messi has proven to be the exception. They gave him a bar 18 meters in the air and asked him to kick the ball over it on the volley and continue juggling the ball when it came down.