Segment of Cheese Shop Skit by Monty Python

Customer: All right. Okay. 'Have you got any?' he asked, expecting the answer 'no'.

Owner: I'll have a look, sir........nnnnnnnnnnnnnnnno.

Customer: It's not much of a cheese shop, is it?

Owner: Finest in the district!

Customer: (annoyed) Explain the logic underlying that conclusion, please.

Owner: Well, it's so clean, sir!

Customer: It's certainly uncontaminated by cheese....