Have you ever seen a pig fly?! Learn the centuries-old origins of this animal idiom. If you say something will happen when pigs fly, it’s never going to happen. But where does that saying come from?

US Airways spokesman Rick Weintraub declined to comment on the FAA probe, except to confirm that the pig did fly first class on the Boeing 757. "There are no further developments," he said ...

BERMUDA - We've often heard of the term "when pigs fly," and it is used as a way to say that something will never happen. However, this particular incident did actually happen, and also managed to ...