The "special" kids got to ride this bus. Those with mental difficulties, and those who were "not all there"
Dave rode the short bus to school, and got to use the PA system, until he barked at one girl, who was a total dog. He was then told to sit in the back of the short bus, which in all actuallity wasn't that far back.
A word used to mock stupidity. Originated in Canada in response to a TV commercial depicting a young hockey fan cheering for Wayne Gretsky. Gretsky's last name was slurred by the boy, and he pumped his fist in the air ackwardly. The word and the gesture and both performed to complete the insult.