"Oh, don't worry about that," said the Scarecrow. "Pinhead rivers are only a couple of feet deep. The worst that can happen to you if you fall in the water is a rusty joint or two."
"Well, I'd better pack my oil-can then," replied the Tin Woodman seriously.
"The Pinheads," explained the Scarecrow, turning to Dorothy, "are almost an extinct breed. You'll find them very interesting. The few that are left live in a small village nearby."
Dorothy looked completely perplexed. "But order a river? You mean you can order a river on demand? Just like that?"
"Just wait and see," replied the Scarecrow, with a knowing grin.
As they approached the Pinheads' village, a few Pinhead children ran out to meet them. Dorothy could see why were called Pinheads. Their heads really were the size of a pin, and when they spoke, their voices were high and squeaky.
"Have you come for R and R?" squeaked one of the Pinhead children.
"R and R?" questioned Dorothy, "You mean rest and recreation?"
With that all the pinhead children burst into a fit of high squeaky laughter.
"That's river and raft," explained the Scarecrow, trying to ease Dorothy's obvious embarrassment. "The Pinheads make their living from supplying rivers and building rafts." Then, turning to the Pinhead child, he asked, "How much will it cost?" Just then some adult Pinheads approached.