Bob Newman, Reader's Digest, p. 67
There'd been a long dry season, and there wasn't enough hay to keep the cows fed, so Gunister and one of his friends decided to go into the hay merchandising business. They got a truck and drove to another state, where they bought hay for $3 a bale. Then they brought it home and sold it for $2.50 a bale.
After a few weeks in the business, Gunister's friend said, "You know, there must be something wrong. We're just not makin' any money."
"I know," replied Gunister. "Maybe we ought to get a bigger truck."