Using a jigger, Measure and pour vodka, blue curaçao, and sweet and sour mix into the shaker.
Secure the lid on the shaker and shake vigorously for about 15 seconds until the mixture is well chilled.
Strain the mixture into a shot glass.
Notes
For an extra frosty shot, chill your shot glass in the freezer for 10 minutes before straining the cocktail into it. This will keep your drink colder for longer.