The Rules of Magic, According to the Greatest Fantasy Sagas of All Time Magic is mysterious and ancient, and its workings are often beyond the understanding of mere mortals. But that doesn't mean that magic doesn't have rules.
"pedo" in spanish means "fart". When students forget that Pedir, meaning to order, is a stem changing verb, they might say "pedo" when the correct form of "I order" is "pido". Grammar lessons aren't just to make them suffer, it's so the waiters don't laugh at them later in life :)