My newest idea. Decoy Air Conditioner, like whatsisname suggest above, except that a bomb explodes it upon contact. Or when it is pulled away from the window, a string pulls out a pin from a flash or stun grenade. Then all you need to do is look up the local hospital for people with eye or nervous problems.
...Creative. Or you could install something so that when they try to pull out the air conditioner, it pulls at string that causes a Stun Gun to get 'em. And when you come home and find the comatose subject, kick him a while for self satisfaction. Or tranquilizer darts. Or something fun.
