Just for Fun

Here are some thoughts:
Why do we say "heads up" when we actually duck?
When a store has double doors why do they only let you use one of them?
If there was a crumb on the table and you cut it in half, would you have two crumbs or two halves of a crumb?
When people say, "I’m so tired it's not even funny" or "my head hurts so much it's not even funny", why would it even be funny in the first place?
If Hooters were to become a door-to-door service would they have to change their name to Knockers?
Why are marbles made of glass (as opposed to marble)?
How come you play at a recital, but recite at a play?
Why do you park in a driveway and drive in a parkway?
Have you ever noticed that if you rearranged the letters in mother in law, they come out to Woman Hitler?
Can you get cornered in a round room?
If an atheist has to go to court, do they make him swear on the Bible?
Why is it illegal to park in a handicapped parking space but its ok to use a handicapped toilet?
Why do they say "an alarm going off," if it is really going on?
Can fat people go skinny-dipping?
Do cows have calf muscles?
Why is it called a "building" when it is already built?
Isn't the phrase "hot water heater" redundant?
Why do people say "bare naked"? Is there another kind of naked?
Why do teachers have pointers yet tell students it's impolite to point?

Let me know what you think of these.