Mr. Brown arrived for work an hour late. His clothes were torn and tattered. He was banged and bruised, and he had one arm in a sling. His boss was purple with rage.
"It's ten o'clock," screamed the boss, "you were supposed to be here at nine. What happened?"
"I'm sorry," explained Mr. Brown, "I fell out of a ten-story window."
"That took you a whole hour?"