"There's supposed to be one coming out on the Weetabix boxes that, if you can solve the puzzle and read it aloud, will make people sprout morning glory vines out of their ears."

"Which wouldn't be much of a concern for any Muggle reading it, but what if a Muggle-born wizard gets a hold of it, not knowing what it is?"

"Well, you can imagine what a mess that could be."