Prepare the Rim:
Pour corn syrup into a shallow dish. Dip the rims of your shot glasses into the syrup, then coat with sugar.
Mix the Drink:
Add ice, sweet and sour mix, and watermelon schnapps into a cocktail shaker. Shake well until chilled.
Serve:
Pour the mixture into the prepared glasses.
Garnish:
Cut a small slit in a pink Starburst and place it on the rim of each glass for a fun finishing touch.