Is the rear seat on a motorcycle really called a bitch seat?

The middle seat in a truck, el camino, or car. Normally where the girl sits when you have 2 men and 1 woman in a front-seat formation. Occasionally, however, the awkward situation will arise where you have 3 males who must sit in the same front seat. read more

It's a known description, but by no means a universal one. In the U.S., this description is also sometimes used, usually by younger males, in the context of a car. E.g. read more

In context of the game shotgun, the bitch seat is the seat that is last to be claimed after shotgun is called.It is the worst seat in the car, usually the middle back seat, although any backseat in the car can be the bitch seat if it has, for example, a malfunctioning window or crappy apholstery. read more