An old man calls in to a radio station during a contest... ""Welcome to 99.5 The Lounge, you're on the air. We're currently holding our annual quiz contest; answer any of three questions right, and you'll win $500. You ready?"" ""That I am."" ""All right, let's begin. The first question is... What has four wheels and travels on roads?"" ""That would be a car, right?"" ""Almost, but not quite. The answer we were looking for is 'a Toyota Prius.' You still have two more chances for that $500, so it's okay. Let's move on to the next question, shall we? What guzzles gas, has four wheels, and can cut your lawn?"" ""Why, that would be a lawn mower!"" ""Close, but in particular we were looking for a Black and Decker 15"" Corded Mower with Edge Max. You still have one more question and one more chance to get that $500."" ""All right."" ""The final question is... What transport vehicle flies using two wings?"" The older man goes silent for a second. When he comes back, he says: ""A Boeing 747, final answer."" ""Unfortunately, you were wrong. The answer we were looking for is ""a plane"".""