A man went on vacation to Thailand once...

...unfortunately something went wrong with the booking of the hotel. His room (and any room for that matter) wouldn't be available until tomorrow. The receptionist told the man that if he asked nicely he might be permitted to stay one night in the local temple along with the monks. So the man made his way to the temple. Once there he was greeted by an old monk.

"Good evening.. ehm.. sir? Something went wrong when booking my hotel. Could I possibly stay here for just one night?"

"Of course!" said the monk. "We have a room just for tourists like you, we can even offer you some food in the morning. However, I must warn you. You may wake up in the middle of the night hearing a strange sound."

"What strange sound?" the man asked monk, now very curious as to what this might be about.

"I wish I could tell you", said the monk. "But only monks are allowed to know the source of this sound."

Although bummed out, the man didn't think much of it. I mean, he got what he wanted. A place to spend the night, and that's all you can ask for. But when he awoke in the middle of the night to the strangest sound he had ever heard in his entire life his curiosity creeped back to him. He NEEDED to know what this unearthly sound was. So when the monk came with his food in the morning he asked him again.

"I'm sorry", said the monk. "But only monks are allowed to know the source of this sound."

"Ok, then I want to become a monk", said the man.

"Becoming a monk is not easy, it requires much dedication and many can't do it."

"I'll do whatever it takes, like, absolutely anything. I NEED to know the source of this sound."

"Very well", the old monk seemed pleased with the answer. "To become a monk, you must travel the world and count every blade of grass and every grain of sand. Once you do that, you become a monk."

The man walked out of the temple. His journey had now begun. He started traveling all across the world. Counting every blade of grass and every grain of sand.
Many, many years later he returned to the temple. The old monk were, to his surprise, still alive, waiting for him on the top of the stairs to the temple.

"So?"

"I counted it to 56738370921 blades of grass, and 27489173408820 grains of sand!" the man said with triumph on his face.

"I can see your dedication. Congratulations, you are now a monk."

"So... I get to see the source of the sound?"

"Yes, you may. Follow me please."

So he followed the old monk. Through the temple and into a tiny room at the back. The only thing housed in this room was a large wooden door.

"Behind here, is the source of the sound", said the monk.

"FINALLY!" the man thought to himself. "I FINALLY get to see the source of the sound."
He walked up to the large wooden door, filled with anticipation. He placed his hand on the handle and slowly opened the door.


And what was behind the door? I would tell you, but only monks are allowed to know the source of the sound.