For those of the D type who on occasion need to pull out the look. You know the one that brings shivers down the spine of the S type who either just said or was about to say some iteration of "make me".

For those D types who perfected that "look" (tm) and who also have kids, work with kids, or have too much experience with unruly youth for whatever reason, how does your "look" (tm) differ from the stern look given to the youngin's?