A guy gets a job as a bus driver, and his route is, oddly enough, on Sesame Street.
On his first day on the job, he pulls up to the first stop on his route to find only a young (and rather chunky) girl. She climbs up the stairs of the bus and tells the driver, "Hi there! My name's Patty!" The driver closes the door and says, "Hi, Patty! Have a seat.... glad to have you on board!"
At the second stop, there's another large girl, larger than the first. She enters the bus and says to the driver, "Hi there! I'm Patty!" The driver responds, "Hello, Patty, take a seat... happy to see you!"
At the third stop, there's a little boy waiting. He's all dressed up: crisp, pressed shirt, tie, combed hair, shiny shoes. He gets on the bus and proclaims, "Hello! I'm Ross, and I'm special!" The bus driver offers, "Have a seat, Ross!" rather coldly.
At the fourth stop, there's another little boy. And he's just the opposite of Ross: Ratty shirt, torn blue jeans, dirty shoes and unkempt hair. He climbs the stairs and tells the driver, "Hi there! I'm Chester Lee!" The driver retorts, "Sit down, Chester!!!"
As he is making his way to the next stop, he looks up into the mirror and sees Chester Lee has taken his shoes off and is picking at his bare feet. He slams on the brakes, brings the bus to a screeching halt, and throws the door open to exit.
Before he does, he yells, "I can't stand it! I've got two all-beef Patties, Special Ross, Chester Lee picking bunions on a Sesame Street bus!!"