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 man was leaving church one day...
A man was leaving church one day. The Pastor was standing at the door (as he always is) to shake hands with members of the congregation. He grasped the man by the hand and pulled him aside. The Pastor said to him,"You need to join the Army of the Lord!"The man replied, "I'm already in the Army of the Lord, Pastor."Pastor questioned, "How come I don't see you except at Christmas and Easter?"He whispered back, "Shhhhhhhhh. I'm in the secret service."