Paper
“I’m told this is the best sheet of paper on the market. Can you explain why in particular it’s so good?”
“Well, it’s flat.”
“An important quality, to be sure, but one not entirely unique to this.”
“It’s good for writing on, too.”
“Again, most paper is.”
“Nonsense! There’s loads of paper you can’t write on.”
“Such as?”
“Well, newspaper for one. And toilet paper would be pretty hard, I’d bet.”
“…”
“What?”
“Are you a moron?”
“How dare you say such a thing, sir? I am a trained paper salesman!”
“Did a moron train you?”
“No, sir, a Mormon did.”
“That’d explain it.”