A man and woman were having sex.
After they were done, the man asks the woman, “Are you a nurse?”
The woman answers, “Yes. How did you know?”
The man replies, “Because you took care of me so well.”
Then the woman asks the man, “Are you an anesthesiologist?”
He says proudly, “Yes. How do you know?”
The woman answers, “Because I didn’t feel a thing.”