A business's copier is running very poorly. The machine jams, prints unevenly, and half the time won't even pass paper. They call every dealer in the phonebook to no avail. Finally, the oldest repairman at a very old dealership is called in after all the young bucks have failed. He loads new paper and turns the machine on, listening to the copier for a couple minutes.
He then walks behind it, hauls off and gives it a big swift kick in a strategic spot. Lo and behold, the copier starts humming like a kitten. The repairman turns around and writes the owner a bill for $500. The owner is flabbergasted and demands an itemized breakdown AND EXPLANATION.
The repairman takes the bill back and writes a line at the bottom: '$1 for my time, and $499 for knowing where to kick.'