It used to annoy me so much when people told me I look angry or asked me "are you ok?" so I went through this phase of trying to appear happier and more approachable. But screw that. Lately, I confess to looking particularly annoyed and unapproachable on PURPOSE (on TOP of looking naturally "angry") whenever I see someone annoying just so they won't bother me. So far so good, I've gotten many agitating people off my back.
And I know I'm not helping the INTJ stereotype.