nteresting; I suppose I have a similar take, although I don't
  consider it mockery.
  What I do, I call "Being Literal" but I do it with a dry humor.

  I do it with a knowing smirk; that "I know that they know that
  I'm being a bit of a troll" with my answer. But.. only after a
  dramatic pause. I might finish with a compliment. Sort of "one
  minute manager" style, the compliment-criticism-compliment
  sandwhich without the top piece of bread... and not really
  criticsm and more a "go away, you can do it, sit down" kind of
  compliment.

  Except for the faintest of hearts, most people past the age of 6
  would 'get it'. [7+ is the beginnings of an explosion of
  sarcastic, caustic humor] - - and even the faint of heart are
  likely posturing/faking.

  So mockery? Yeah I suppose it it. To me though, it's meeting
  them eye-to-eye. I'm not better and you'll do fine. I didn't
  teach in an academic setting however; my work has either been
  volunteer or informal so a classroom setting might be different,
  I can't really say.