I remember one time I was told, "You look WAY too young to be buying this stuff." I later thought of the perfect, cold response (this is really mean): "And you look WAY too old to be working at a grocery store."
I obviously have no problems with whatever someone's job is, but the comment was designed to be hurtful, not sincere.
I'm way too nice to respond to fire with fire, but there have been some funny suggestions so far.
He ran because it grounded him in basics. There was both life and death in it; it was unadulterated by media hype, trivial cares, political meddling...It was all joy and woe, hard as a diamond; it made him weary beyond comprehension. But it also made him free.