Definition of a school bus driver: A man who thought he liked children.
An iron worker was nonchalantly walking the beams high above the street on a new skyscraper, while the pneumatic hammers made a nerve-jangling racket, and the compressor below shook the whole steel structure. When he came down, a man who'd been watching him tapped his shoulder. "I was amazed at your calm ness up there; how did you happen to go to work on a job like this?"
"Well," said the other, "I used to drive a school bus, but my nerves gave out."—Wisconsin Journal of Education