+43 See, there were these two guys in a lunatic asylum...and one night, one night they decide they don't like living in an asylum any more. They decide they're going to escape! So, like, they get up onto the roof and there, just across this narrow gap, they see the rooftops of the town, stretching away in the moonlight...stretching away to freedom. Now, the first guy, he jumps right across with no problem. But his friend, his friend daren't make the leap. Y'see...y'see, he's afraid of falling. So then, the first guy has an idea...He says 'Hey! I have my flashlight with me! I'll shine it across the gap between the buildings. You can walk along the beam and join me!' B-but the second guy just shakes his head. He suh-says... he says 'What do you think I am? Crazy? You'd turn it off when I was half way across...HA HA HA... if anyone can tell me why this is so funny I'll give them a grand prize. But you need to find the true reason...I doubt you will so Ha!
+118609 Thanks ClownPrinceofChaos,
Here is someone's theory of what this is all about.
This threory does not involve a lot of humour though :) 
https://www.reddit.com/r/FanTheories/comments/3obe46/meaning_behind_jokers_joke_to_batman_in_the/
+43 Because no matter how much we most people try they are just like they beam of light. They exist and they are they but they don't mean anything and that my friend is truly what is so funny. Everyone thinks we have been put on this earth for a reason but truly when you think about it...if the great lord in the sky existed...the only reason we were put on this earth was to make him laugh. If he truly existed than he made us imperfect to give him something to laugh at. So if you look through his eyes we truly are funny and it truly is a joke. HAHAHAHA!!!
