Does adding on to a statement mean you agree with it?

Question

If Person A says "Never trust a used car salesman or a politician" and Person B says "Or a lawyer" is it implied that person B agrees with Person A? Is there a word or phrase for this?

Answer 1

Interesting question! Yes, that addition does imply that speaker B agrees with speaker A. I have never heard a term for this. I'm tempted to create one -- perhaps you can; will post if I think of something appropriate.