Google Gulp (site)

How to get Gulped?
You can pick up your own supply of this "limited release" product simply by turning in a used Gulp Cap at your local grocery store. How to get a Gulp Cap? Well, if you know someone who's already been "gulped," they can give you one. And if you don't know anyone who can give you one, don't worry - that just means you aren't cool. But very, very (very!) soon, you will be.

Oh those guys at Google, they are a funny bunch.