The fourth best position when travelling in a
car or ute. In the usual order, from best to worst, the seats are: driver, shotgun, wingman (behind shotgun), backseat driver (behind the driver), bitch (if it exists), hump, and
bed.
Contrary to popular belief, the hump is not the seat between driver and shotgun. That is the bitch seat. The hump is located behind the bitch seat, where there often is a hump in the
floor, thus the name.
Joe: "Shotgun!"
Mike: "Well, then, I take wingman."
Bill: "I'm too
tall for backseat driver or
hump, so I take bitch. Put the dog in the cargo
bed."