Top definition
A bright-yellow Hummer 2 SUV.

Derived from the schoolyard slang term short bus--the bus mentally retarded and disabled students ride in--and the fact that, like American school buses, it is bright-yellow and black. Unfortunately, in the case of the Yuppie Short Bus, the retarded person is usually in the driver's seat.
While crossing the street, I almost got creamed by an asshole driving a Yuppie Short Bus and yakking on a cell phone.
by Bitchy McBitchalot March 17, 2005
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