Prepare a large glass full of ice then add the Tequila, Jack, Peach schnapps, and cola. The key is the schnapps, too much and it's too sweet, too little and it doesn't take the edge off the Jack/tequila mix. Stir until well mixed. Use whatever you want to mix it, a spoon, your finger, the barrel of your .44 Magnum, whatever. Then drink. Again. One more time. Don't mind the headache, it feels good. This came to me at the end of a party, where I had to mix a drink, and FAST, and these were the closest ingredients at hand. I chose the name to represent the variety and amount of liquor one would normally consume during a trip to Las Vegas sanctioned by The Contingent (tm).