1/2 shot of Gin
1/2 shot of Light Rum
1/2 shot of Tequila
1/2 shot of Vodka
1/2 shot of Midori (or watermelon liqueur)
sour mix
7-UP or Sprite
Pour gin, rum, tequilla and vodka in glass all at the same time. Drizzle in Midori or any other melon liquor. Splash in sour mix and 7-UP (or Sprite). Mix in tumbler. Serve in tall high ball glass with ice.