Never smile at a crocodile.

No, no I’m serious. Stop grinning at me like that, I am being perfectly serious. Look, it’s written right down there in the book, see?

Yeah. Yeah, that’s right, I’m not joking around. It’s a rule, an actual rule. You never, ever smile at a crocodile while you’re working here.

Oh sure, it seems harmless enough, once you start smiling at that crocodile, we’ll, you might be tempted to stop and chat a while. Soon, you’ll be taken in by his welcome grin.

And, before you know it, you’ll find out how well you fit within his skin.

So I’m telling you, newbie, never smile at a crocodile.