a question, Mark?

Do you have a question, Mark?

Yes, what is a question mark?

This is a question mark?

What?

This is a question mark?

That question doesn't make any sense.

Well the fact that you see that as a question suggests that you understand that this? is a question mark.

I'm sorry, but you are not making sense, are you asking a question?

I give up, this isn't going anywhere.

On the contrary, i think it has gone too far.