You are a South African bush pilot.  You fly in some critical
medical supplies and then enjoy a quick lunch at the hospital.
It's a stifling 100 degrees and you're eager to get back up
to the cool, high blue yonder.  On the way back to your plane,
you discover that the only bit of shade, within 10 miles, has
become very popular...  You start calculating the distance to
the plane door and wonder...  "Do I feel lucky today?"
.