A pedestrian who seems to appear out of nowhere while one is driving. This pedestrian may not have been seen due to the driver texting, singing, or reading a book while driving.
Peter: *reading Harry Potter while driving down the street*

Pedestrian: AAAAAHHHH!

Peter: *swerves out of the way* Holy crap! Those ghost pedestrians are such hazards!
by emmef January 16, 2012
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