Yep, Google knows how much it sucks when you have to spend a single moment away from your porn and memes, so they provided a fun offline minigame in Chrome called T-Rex Runner. The game features a tyrannosaurus running across a desert, avoiding dangerously overgrown cacti and pterodactyl until you miss a jump and he goes extinct. Play long enough, and it will turn into night -- both in the game and outside your window. Soon you'll be like, "The internet? What's that?"
Tiny T-Rex won't "like" your ex-wife's Facebook statuses. Tiny T-Rex is a real friend.
Yes, it's kind of simple, but it beats waiting around for your network to reconnect or, god forbid, going outside. And remember: You have to press the space bar to start the game. Maybe write that down somewhere, because you'll feel like an idiot when you forget how to do it and try to Google the answer without a connection.