"What is the stupidest question?"
  "Don't you?"

  It's a dumb question because I'm expected to agree with the
  other person and if I don't, it implies that I am dumb. I find
  that a stupid question when people ask it because it's not
  really a question; it's simply someone wanting me to, using
  emotional manipulation [a fear that I supposed to have of being
  considered dumb] - agree.