Why do people drive in cold weather without a winter coat? And on fumes?

Why do people decide not to take a leak before leaving home from work? There was a guy a few years ago around here who had to pee so bad he ran into a tree on his way home from work.

Why do parents allow their children to go to school in the winter wearing no gloves, no hat, and a jacket that would not be warm at 50 degrees, much less 20. And wearing sneakers.