Not quite from the fox's mouth, but as good as you're likely to get.

Gervase, when you next visit the doctor or dentist - I am more than willing than to come with you. And when they probe and ask you if something hurts you or not - I will be quite prepared speak for you with my expert opinion based on my experiences - as to whether it hurts YOU or not.

I am not even too sure if I think from my experiences in these places - if it is even necessary for YOU to be given an anaesthetic or any pain-killing drugs......YOU may not agree with my expert opinion, however.