I’ve always loved this one:
3 good friends (they know each other very well) of absolutely equal intelligence, Huey, Dewey, and Louie are captured by Bin Laden and given an interesting opportunity for one of them to save his own life (ol’ Laden is in a good mood today).
Bin Laden tells them: There are a total of 3 red hats and 2 black hats. I will blindfold all of you and place one hat on each of your heads. I will then remove the other 2 hats from the room and then remove the blindfolds. The first one who correctly states the color of his own hat will be spared; the other two will be summarily executed. If you answer incorrectly, are caught looking in someone else’s eye’s reflection, or any other form of cheating, you will be killed immediately. Good Luck! MUAHAHAHAHA!!!!
Bin Laden goes through the process and places red hats on all 3 of their heads. After about 2 minutes, Louie confidently yells out “It’s red!” and enjoys his freedom as he watches Huey and Dewey being burned alive in vats of excrement (coincidentally, Bin Laden was found the next week and guess what he’s burning in now for eternity?).
How did Louie know? (It could have been Huey or Dewey who figured it out as well, but Louie happened to be faster today.)