[jasonbvr]

I've often had this image of a couple of Japanese admirals on the deck of an aircraft carrier making the final decision to attack Pearl Harbor by janken.

Janken is the standard method for making decisions too close to call one way or the other. Janken if you don't know is paper, rock, scissors, also know as reaux sham beaux.

Saisho gu, janken, po! Aiko desho! Aiko desho! Ja, yatta!!! Katto!!