A staffer came by here earlier, checking to make sure that everyone was running a virus checker on their workstations. The conversation went something like this:
Staffer: "Are you running a virus checker?"
Me: Nope.
Staffer (disgusted look of "ah, caught one"): Why not??
Me: I'm not running Windows.
Staffer: What are you running then?
Me: Unix.
Staffer. Ah. (smile) Never mind, then.
*cackle*