I've kept a list of these as I have come across them... here are some of my favorites:

- If nothing ever sticks to TEFLON, how do they make TEFLON stick to the pan?

- Why do you need a driver's license to buy liquor when you can't drink and drive?

- Why isn't phonetic spelled the way it sounds?

- Why are there interstate highways in Hawaii?

- You know how most packages say "Open here?" What is the protocol if the package says, "Open somewhere else"?

- Why do they put Braille dots on the keypad of drive-up ATMs?

- Why is it that when you're driving and looking for an address, you turn down the volume on the radio?

- You know that little indestructible black box that is used on planes, why can't they make the whole plane out of the same substance?

- Why do we drive on parkways and park on driveways?

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-Toast-
"It takes a lot of brains to enjoy satire, humor and wit - but none to be offended by them." -- Johnny Hart ("BC", cartoonist, 2000)
"Analyzing humor is like dissecting a frog: Nobody really enjoys it and the frog generally dies as a result." -- E. B. White