Jack knew...

Jack knew that Aku would cheat so he hid his sword. Aku knew that Jack knew he would cheat so he brought a minion to find the sword. Jack knew that Aku knew that he knew that Aku would cheat so he hid more than one fake sword. Aku knew that Jack knew that Aku knew that Jack knew that Aku would cheat so he brought an army of minions to find the real sword. Jack knew that Aku knew that so he hid fake swords all over the place.

Example of:
Crazy-Prepared