I get the whys and if I cannot give him an answer he gets louder and louder Same here! I finally have to end it with something profound, like "BECAUSE I SAID SO, THAT'S WHY."
I have also found that these children have a sexth sense about some things. We had to battle cancer several years ago while my son's brother went through chemo. Daniel was almost perfect. It was like he knew he could not make a fool out of himself.