Thirteen at Dinner

Hercule Poirot:
Do I spend much time in Belgium? No, because there is so little crime. You know that I'm very patriotic. I believe in Belgium very profoundly, but crime is practically nonexistent.

Inspector Japp:
Poirot - buzz off like a good chap, will you? I've got bigger fish to fry.

Hercule Poirot:
In a good bouillabaisse the little fish are often tastier than the big ones.

Inspector Japp:
What are you talking about?

Hercule Poirot:
Add poison, however, and the whole soup is polluted. Then the size of the fish are immaterial.

Inspector Japp:
What's fish got to do with it?

Hercule Poirot:
It was your own metaphor; I didn't bring the fish...

Inspector Japp:
I didn't either!

Hercule Poirot:
Stop fish then! Let's leave it out!