It's amazing the things you discover through Google Alerts:
Yoohoo Chocolate Drink Recipe
3/4 cup nonfat dry milk
3 T chocolate Nesquik drink mix
1 1/2 cups cold water
Combine all ingredients in a container with a lid.
Shake until dry milk is dissolved.
Drink immediately or chill in fridge
(Note: The only problem is that if you make your own, you don't have that cute little carton to make a boat with.)
Thanks to grouprecipes.com for the recipe.