Ghost Racing

The act where you, our of boredom, imagine someone, or something, running/flying/swimming etc. outside one of the sidewindows in a car

A thing many people did when they were kids, but wierdly enough never mentioned to anybody (The Ghost Racer Taboo)

Jeoffrey: "Been Ghost Racing lately, Charlie"
Charlie: "Ehm... what's Ghost Racing?"
Jeoffrey: "Look it up in the Urban Dictionary"
Charlie: "Heck is that?"
Jeoffrey: "Charlie, just because you're blind, doesn't mean you cannot internet"