1/2 oz of Vodka
1/2 oz of Gin
1/2 oz of Tequila
1 splash of Coca-Cola (or coke)
1/2 of msr tequila (or Agavero Tequila Liqueur)
1/2 oz of Light Rum
Combine all ingredients (except cola) and pour over ice in a highball glass. Add the splash of cola for color. Decorate with a slice of lemon and serve.