Pour the Grenadine liquor into the shot glass, filling about ⅓
Place an upside down spoon in the shot glass against the glass, slightly above the first layer
Slowly pour the OJ over the back of the spoon.
You will need to do this slowly to prevent gravity from causing the white layer to mix with the blue layer.
Pour about 1/3rd of a second layer Using the same spoon again, repeating the same step, slowly pour the Blue Curacao over the back of the spoon slowly.