Can you cry under water?
 
Why do you have to "put your two cents in".. . but it's only a "penny for your thoughts"? Where's that extra penny going to?
 
Once you're in heaven, do you get stuck wearing the clothes you were buried in for eternity? 
  
 
Why does a round pizza come in a square box? 
  
 
  What disease did cured ham actually have? 
  
 How is it that we put man on the moon before we figured out it would be a good idea to put wheels on luggage?