You must have heard about the Angry Birds game by now, even if you've never played it before.
I just gave it a try this afternoon, and I can see why it's so addictive.
The object of the game is simple: catapult a bird using a slingshot and take down the house that holds a bunch of green pigs that have stolen the birds' eggs. Estimating the trajectory and finding the weak spot of the house, which can be made up of glass, wood and rocks, are crucial to advancing throughout the game.
Apparently this game has become so popular that stuffed toys and T-shirts have been made for them. I hear they're making a movie based on this game to be released in 2014. That's just insane.
So if you're looking for some harmless fun, give Angry Birds a shot. Find it on Facebook or download it on your phone or something.