The undertaker, when they don't think any more!
PSYCHOLOGY
"Father," said the small boy, "what is psychology?"
"Psychology, my son, is a word of four syllables that you ring in to distract attention when the explaining gets difficult."
A small boy seated on the curb by a telephone-pole, with a tin can by his side, attracted the attention of an old gentleman who happened to be passing.
"Going fishing?" he inquired, good-naturedly.
"Nope," the youngster replied. "Take a peek in there."
An investigation showed the can to be partly filled with caterpillars of the tussock moth.