Pictures:

Why did John think he had Type O blood, when he really had Type A?

His birth records had a Type O.

573

How does a butcher greet his customers?

Nice to meat you!

195

Which psychiatry specialty deals with bizarre behavior?

Off-the-wall-ogy

2002

What does a smart person have in common with a school principal?

They are both in charge of their faculties.

3168

Why should you learn sign language?

It comes in handy.

801

How do you distinguish between a numerator and denominator?

There's a fine line between the two.

1013

Which Einstein idea concerns family relations?

The Theory of Relativity.

1541

Why did one man leave the card playing group of his wife's friends?

He needed to "de-talks".

506

Why was no one able to buy more summer hats after a man just did?

That was the last straw.

191

What was the name of Joe's band, and which instrument did he play?

Band Joe.

817

What is this man's motto?

"A waist is a terrible thing to waste".

306

Why did bill choose gastroenterology as a medical specialty?

He had a gut feeling.

1437