The bus driver has to leave for a while, and he makes one request of readers: "Don't let the pigeon drive the bus." It's the height of common sense, but the driver clearly knows this determined pigeon and readers do not — yet.
"Hey, can I drive the bus?" asks the bird, at first all sweet reason, and then, having clearly been told no by readers, he begins his ever-escalating, increasingly silly bargaining. "I tell you what: I'll just steer," and "I never get to do anything," then "No fair! I bet your mom would let me."