A homeowner calls the police at 1 a.m. saying he sees someone in his back yard, trying to break in to the shed. They tell him they're very busy, but will try to have someone out as soon as possible.
Ten minutes later, he calls the police to say there's no need to rush: he just shot the intruder dead.
Three minutes later three cars screech to a halt in his driveway and they catch the intruder coming out of the shed. First officer to the house asks, "But I thought you said you shot him?"
"And I thought you said you were busy?"