Prepare your shot glasses by ensuring they are clean and dry.

Pour 1/2 oz grenadine into the bottom of each shot glass to create the first red layer.

Using the back of a spoon, carefully layer 1/2 oz orange liqueur over the grenadine to form the second layer.

Layer 1/2 oz pineapple juice on top of the orange liqueur using the back of a spoon.

Gently add 1/2 oz blue curaçao over the spoon to create the vibrant blue layer.

Finish by layering 1/2 oz vodka on top, pouring slowly over the back of the spoon to maintain distinct layers.

Optionally chill the shots in the refrigerator for a few minutes before serving.

Serve immediately and encourage guests to take the shot in one go to enjoy the layered flavors.