Using your finger, coat the rim of your glass with frosting – make sure not to miss any spots! Dump sprinkles on a plate and press glass rim into sprinkles, pressing to adhere. Combine all ingredients in a cocktail shaker with ice and shake for about 30 seconds. Strain into glass and drink!
[If you do not want to buy any of these crazy ingredients, try the original version I adapted above which only requires vanilla vodka. It is still delicious but wasn’t quite “cupcake material” in my opinion. But you know I’m whack.]