One day I was twelve years old and broke. I set out to mow some lawns with Grandpa’s old riding mower. One client was Arnold the stockbroker, who offered to teach me about: the beauty of capitalism. Supply and demand. Diversifying labor. Distributing the wealth. “It’s groovy, man,” Arnold said.

The grass grew, and so did business. Arnold invested my money in many things. One of them was a prizefighter. All of a sudden I was the sponsor of my very own fighter, Joey Pow. That’s when my twelfth summer got really interesting.

Gary Paulsen’s comic story about a summer job becomes a slapstick lesson in business as one boy turns a mountain of grass into a mountain of cash.