Old Version, newer on the bottom.
OFFICIAL RULES
1. RULES:

A. The challenge is initiated by drawing your coin, holding it in the air by whatever means possible and state, scream, shout or otherwise verbally acknowledge that you are initiating a coin check. Another, but less vocal method is to firmly place it on the bar, table, or floor ( this usually creates a noise that can be heard easily by those being challenged) If you accidentally drop your coin, and it is audible upon impact you have intiated a coin check.

B. The response consist of all those persons being challenged drawing their coin in like manner ( Other organazational coins are invalid) You must produce a coin with a SPECIAL FORCES logo on it!
C. If you are challenged and unable to properly respond, you must buy a round of drinks for the challenger and the group being challenged.
D. If everyone being challenged responds in the correct manner, the person issuing the challenge must buy a round of drinks for all those being challenged.
E. Failure to buy a round is a despicable crime, and will require that you turn in your coin.

2 When and Where

A. Coin checks are allowed anywhere, anytime!

3. Exceptions
A. There are no exceptions to the rules, They apply to those clothed or not, at the time of the challenge you are permitted to one step, and an arms length to reach your coin. If you still can not reach it-- you lose sorry.

4. A COIN IS A COIN
A. Coins attached on belt buckles are considered to be "belt buckles".
B. Coins on key chains are considered key chains.
C. Coins placed in a holder/clasp and worn around the neck like a necklace are valid and considered a coin

NEVER BE CAUGHT WITHOUT YOUR COIN!!!
This is the newer version.