Tooth fairy trauma

This morning, a very grumpy Hughie trundled off to class. As i watched him walk to school, I was pulled aside.

"Um, i just wanted to talk to you about something. Yesterday, {Emma-not-real-name} (who is in Hughie's class) was a bit upset about something Hughie said... he actually told her that the Tooth fairy is not real and it's just mums and dads who give you money! I'm pretty upset about the whole thing. She has only lost one tooth before and now she has been cheated of the magic! Now i have to think of some ways to re-kindle the magic."

Pause for effect.
Not really sure how to react.
Aside from being extremely sorry for causing trouble.
So i apologise profusely.
And honestly, we have never talked about the Tooth Fairy at all with Hughie. He doesn't even have a wobbly tooth in sight, we've been checking. I guess plenty of kids in his class have experienced it, and I suppose they all talk about the Tooth Fairy. Personally i haven't even thought about it at all.... it's not the type of magic i have been dying to recreate for my kiddies.

So i have no idea how he knows the truth, and i guess now we'll have to take him aside and fill him in on the sensitivity side of it all before he kills anyone elses dreams! eeeeeeeeeeeeeeeeeeeeee