Place sprinkles on a shallow plate that is a little larger than the mouth of your martini glass. Dampen a paper towel with whipping cream (or water) and wet the rims of the martini glasses. Dip glass into sprinkles to coat the edges.Combine all ingredients in a cocktail shaker with ice and shake for about 30 seconds. Strain into martini glasses and drink!Make ahead: For a big party, mix up a big bath of these martinis and store in a large pitcher in the fridge. Shake a glass at a time over ice whenever ready to serve!