When you do or say something that makes you seem retarded. From the Hallmark Hall of Fame movie of the same name starring Rosie O'Donnell in which she plays a "challenged" person who, surprisingly, rides the bus with her sister. What could have been a touching portrayal was ruined by the fact that she spent the majority of the movie screaming and acting like an insane monkey rather than a noble portrayal of a person with mental handicaps. So really, you are acting more like an insane monkey than a retarded person. Shortened version of Riding the Bus with My Sister.
"Don't put aluminum foil in the microwave. You are so Riding the Bus when you do that."
by The Carester September 13, 2005
A synonym to being high. You can be extremely blazed, or not so much. "Riding the bus" is a good code sentence to talk about being high around people. Look up: "going to catch the bus" which means- to buy drugs.
Dude, I was riding the bus the other day and I thought I was flying!
by lalalandhaha June 24, 2010