Spread the vanilla frosting onto the rims of 2 milkshake glasses, creating a 1 inch band around the glasses. Stick the Sour Patch Kids Bites to the frosting, going all around the glass. Set them aside.
Combine the vanilla ice cream, milk, cherry syrup, and raspberry syrup to a blender. Blend until smooth and combined. Add more ice cream or milk until you reach your desired consistency.
Pour the milkshake into the prepared glasses. Top with a mound of whipped cream and garnish with your favorite sprinkles and candy. Enjoy!