Definitely lighthearted and curious!
I have been trying to stop my DNiece from picking her nose with various tactics. The one which seems to resonate most is 'the doctor can tell when you have a check-up; you are stretching your nostrils and they can see the bogeytrails on your tonsils'.
I made me wonder, are there telltale signs that professionals can use to tell things about us, either secrets or things we don't even know about ourselves? Can a hairdresser tell I use cheap shampoo? Can a manicurist spot I have a vitamin deficiency? And what on earth can the nurse infer from my smear... 