Hell, it's barely even a game. You know what you do? There's this poor guy, and he has glasses on, and he's trying to work and you sit behind him and throw things at him, because you're just the worst.
You know what he's working on over there? He's programming a charity website. It's a charity website to raise money for homeless baby penguins and he's spending his lunch break building it pro bono. How are you helping? Oh, that's right, you're flicking your iPhone or Android device's screen to throw dozens of different items right at his head, all the while accounting for the breeze of the office's constantly oscillating fan.