JANKEN - ROCK PAPER SCISSORS

In the game 'Janken', winner and loser are determined by
hand signs for stone, paper, and scissors.
The 'stone' is a closed fist, 'paper', an open hand,
and 'scissors', extended index and middle fingers.

Paper can wrap a stone, so a 'paper' gesture wins
over 'stone'.  'scissors' cut 'paper', so they defeat it.
But 'scissors' cannot cut 'stone', so they lose.

At the last syllable of jan-ken-pon, players extend
their hands in one of these signs.

Janken can be played by two or more persons.
A simple game in itself, it is often played to decide
procedence and things. 

Usually 'stone' is called guu, 'paper' paa,
and 'scissors' choki.

Here is an interesting web-site, you can play Janken:
http://www.netlaputa.ne.jp/~tokyo3/e/janken_e.html