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."