Mitchell from Arlington, Texas, wonders about his father’s expression: If a bullfrog had wings, he wouldn’t bump his butt. It’s been around since at least the early 1900s, and is a variation on an older expression, If pigs had wings, they could fly. They’re about the fact that mere wishful thinking doesn’t make something so. Other versions include If wishes were horses, beggars would ride and If my aunt had wheels, she’d have been a bus. Still another: If my aunt had been a man, she’d have been my uncle. This is part of a complete episode.