Using a bar spoon, slowly pour the Baileys into the shot glass.
Use the bar spoon again, to slowly pour the whiskey on top.
Enjoy responsibly!
Notes
Use a Bar Spoon: Pouring the alcohol directly into the glass may mix your layers. Instead, use pour them onto the back of a bar spoon to reduce splashing, and give you three district layers.
Don't Touch: Don't allow the spoon to touch the layer below it. In scientific terms, this will break the surface tension and the layers will mix.
Pour slowly!
Start with a chilled ingredients and a cold glass for an icy cold cocktail.
Whiskey: I like using Crown Royal Whiskey. Its caramel notes go great with this dessert drink.