Today, my older granddaughter questioned why six is scared of seven. I was unaware of such a test. She thus provided the response of 789. I questioned her about how the solution connects to the seemingly unimportant number 6. The "answer" that 7 had "ate" 9 was then made known by the speaker.

Now I realize. Since 7 can consume 9, since 9 is the largest single digit, naturally, 6 should be wary of 7.

Well, don't take it seriously; it's just sort of a joke.