An invisible man is here to see you
Nurse: Doctor, there is an invisible man in your waiting room.

Doctor: Tell him I can't see him now. Next.

A lawyer returns to his parked BMW to find the headlights...
A lawyer returns to his parked BMW to find the headlights broken and considerable damage. There's no sign of the offending vehicle but he's relieved to see that there's a note stuck under the windshield wiper."Sorry. I just backed into your Beemer. The witnesses who saw the accident are nodding and smiling at me because they think I'm leaving my name, address and other particulars. But I'm not."