750 ml bottle of cheap rum
3 liters any flavor bottle of cheap soda

This is a very simple drink to make, and a very cheap drink to make. Pour out (drink) approximately 750ml of the cheap soda (usually orange or lemon-lime soda). Then pour the bottle of cheap rum into the soda bottle. Turn the bottle up and down a few times to mix, then open carefully so that it does not explode. Drink right out of the bottle with a friend. For best results, drink in a public park.