Politicians and diapers... Both need to be changed for the same reason

Nurse: "Doctor, doctor! The man you've just treated collapsed on the front step! What should I do?"

Doctor: "Turn him around, so it looks like he was just arriving!"

The nurse noticed a man in golf attire pacing up and down outside the emergency room where another golfer, who had a golf ball driven down his throat, was being treated by a doctor.

"Is he a relative of yours?" the nurse, stepping outside the room, asked the pacing golfer.

"No," replied the man. "It's my ball."

The math teacher was giving a lesson on fractions and wrote an example on the chalkboard. He explained that the numerator was the top and the denominator was the bottom. Leaning against the board, he asked the class, "Are there any questions?"

When he turned back to face the board, laughter filled the room. "Mr. Alexander," one student giggled, "you have chalk dust all over your denominator!"