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.

Blonde State of Mind
A blonde was bragging about her knowledge of international capitals.

She proudly said, "Go ahead and quiz me. I know all of them!"

Her friend said, "O.K. then, what's the capital of France?"

The blonde replied, "Oh, that's so easy! F."