"Why is it that.........." joke

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

If you have your finger touching the rearview mirror that says -- "objects in mirror are closer than they appear", how can that be possible?

Why is it so hard to remember how to spell MNEMONIC?

If someone invented instant water, what would they mix it with?

Why is it called a TV "set" when you only get one?

Why does your nose run and your feet smell?

Why does an alarm clock "go off" when it begins ringing?

If pro is the opposite of con, is progress the opposite of congress?

Why does "cleave" mean both split apart and stick together?

Why is it, whether you sit up or sit down, the result is the same?