Redundancy

A gentleman comes to the counter with something that looks all the world like an envelope for X-rays. He asks me for a FedEx envelope. We can all see where this is going, but I play along. I hand him a legal-sized FedEx envelope.

"This is the biggest one I have."

"Do you have one that is bigger?"

"No, this is the biggest one I have."

"Isn't there one that is bigger?"

"There may be one that is bigger, but I don't have any. This is the biggest one I have."

"You don't have anything bigger?"

"No, this is the biggest one I have."

I really have no comment. I mean, what can you say to that?