THE DADDYHOOD -- What's this made of?

So the other day my 3-year old picks up a spoon off the table and says, "Daddy, is this made of glass or of wood?"

And I said, "Actually buddy, it's something called stainless steel."

"Stainless steel? What's that?"

"Well," I said, "it's something that's very hard and will last a long time."

He then proceeded to take it and whack it on our dining room table as hard as he could, leaving a visible mark.

"Yup," he says. "That's stainless steel."