Aren't we all at sea here?
Do

Hi Clary
Do you think it might be the Atlantic?
Aren't I feeling quite Pacific today?
Shouldn't you go and see a doctor if that is the case?
Do you mean a witch doctor?
Must a witch doctor actually be a witch, or can one be just a regular doctor that specializes in treating witches?
Did you think I was referring to the latter part of your statement?
Hi Tic.
I have no idea which statement you are referring to, but if the witches were identical twins would we have a problem in knowing which witch was which witch?
Did I hear the witch doctor is commencing a witch-hunt on his witches' broom at witching hour?
Forgot what! What are we talking about anyway?
Is your memory failing you?
Do you feel in need of a test?
Are you going to put me to the test, Dutch?
Do you want me to leave you two alone?
Do you think three is a crowd?