"No, we can't watch that show." I said to the 4 yr-old. "It's not for kids."
"Why?" she asked me seriously.
"Because, it's not for KIDS."
"But WHY?" a bit more forcefully this time.
"Because it's NOT for KIDS and YOU are a KID!" - ok, I was a bit more forceful too.
"Well, then is it for FIVE kids?" she asked me.