It's ye olde WKRP In Cincinnati joke: "As God is my witness, I thought turkeys could fly." (http://www.youtube.com/watch?v=iafzqOCaxA4) I thought that old roasted chestnut had been dragged out enough over the past week or so that everyone would have heard it (or re-heard it, if old enough or a fan of late-night reruns) by now....

ETA: This clip is long enough to include the quote itself (http://www.youtube.com/watch?v=P2ifyi8-lxo&feature=related), at around 4:09 :P