When one wears pants that are too short, therefore exposing their socks.
What's up with your pants? You are totally riding the bus
by 420/24/7 October 29, 2004
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when you ghost ride the bus you run along the side of the bus, because you don't have enough money to get in...this is followed by stopping at each bus stop asking for spare change to get on.
nicole spent all her money on drugs, so she had to ghost ride the bus to work.
by BETTY CROCKER June 27, 2006
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When you ride a guys dick while in a car. The vagina is home in this situation.
I saw you in that car with him, We're you riding the bus home?
by Kayaaaaaa May 23, 2017
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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. Can be shortened to Riding the Bus.
"Do you really think you should wear leggings under your skirt? It's a little Riding the Bus with My Sister."

or

"Don't talk so loud in the movie theater. It makes you too Riding the Bus With My Sister."
by The Carester September 13, 2005
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Homosexual.

Usage citation: Dr Who, S04E07 The Unicorn and the Wasp: Donna Noble says:
Typical, all the decent men are on the other bus.

i.e. All the decent men are riding the other bus.
by Llama2 September 29, 2015
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V. A derrogatory phrase derived from the smaller school bus used to ferry special education students to and from school. 1) To act in an immature or stupid way. 2) To be an immature or stupid person. 3) To drive an especially large S.U.V.
Johnny is such a dumbass, he definitely rides the short bus.
by snarkette April 23, 2003
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Someone stupid. A dumbass or gimp. Basically, being retarded.
That kid's riding the short bus.
by krazykangaroo March 20, 2005
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