If someone can figure how to implement this concept into some real/virtual gift-game-concept for a startup they would do marvelous.
And that, ladies and gentlemen, is why we can't have nice things.
What's missing from this is the accountability in the real world cafe. If you ordered something disgusting, there is a significant chance the next person is not too far behind you and will take it out on you.
Also, the cafe has a finite menu of predefined positive choices, whereas Google has an infinite menu including potential negative choices.
I just ruined the joke, didn't I?