Rim each shot glass with black sugar by dipping in pineapple juice, then rolling in sugar.
Mix pineapple juice with blue curaçao to create neon green. Pour into glasses and chill until slightly set.
Mix grenadine with a splash of curaçao. Slowly pour over green base using the back of a spoon.
Top with straight blue curaçao for a dark finish.
Drop in a green cherry for the Frankenstein touch and serve chilled.
