[In the car, driving along the motorway]

L: What is inside that lorry?

D: I don’t know.

L: [Mildly annoyed] Yes you do. Why has it got that sort of frozen sign on the side of it?

D: Maybe it’s carrying frozen goods.

L: Like ice?

D: Yep, it could be ice, more likely to be-.

L: Sweetcorn.

D: Well, no. Probably-

L: [With conviction] Like ice, or sweetcorn.

D: Yep.