Is it a drink? Or is it a dessert? Who cares - it's delicious, is the correct answer. This recipe is about as simple as you can hope for, while also being as tasty as can be.
Substitute the vanilla ice-cream with a different flavour.
Add a splash of Irish Cream Liqueur for the adults. There are so many ways to play with this recipe that are foolproof. Knowing where to stop will be the tricky part.