"Thank You for Showing Me the Futility of Human Endeavor"

Actually a Swedish bartender's response to Bart Simpson's prank call, but also a good thing to say if you ever called-out in a seminar.

In the presentations and workshops I attend, there is no shortage of egos who desperately need their pomposity deflated, and to gain the perspective that ultimately the work they do matters very little.  Remind them that "...All is vanity; What profit hath a man of all his labour which he taketh under the sun?"

Reminder: All is Vanity.  Remember you are dust, and to dust you shall return.