Add yours....
* Isn't it a bit unnerving that doctors call what they do practice?"
*If the "black box" flight recorder is never damaged during a plane crash, why isn't the whole airplane made out of that stuff?
* If the police arrest a mime artist, do they tell him he has the right to remain silent?
* What was the best thing before sliced bread?
* If you try to fail, and succeed, which have you done?
* Why are hemorrhoids called "hemorrhoids" instead of "asteroids"?
* Why doesn't the word 'phonetic' begin with an 'f'?