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 woman had some problems, so she went to her doctor...
A woman had some problems, so she went to her doctor of twenty years.They had the following conversation: Dr.: Take the red pill after breakfast with one glass of water.Woman: Ok. Dr: Take the blue pill after lunch with two glasses of water.Woman: Ok. Dr.: Take the yellow pill after dinner with three glasses of water.After giving these instructions to the woman, she asks, "Can you tell me what's wrong with me Dr.?Dr.: Yeah. You do not drink enough water.