To ride in the middle seat of a standard cab pickup truck, sometimes erroneously referred to as the bitch seat.
Unknown origin. Probably originated from the name of the sexual position quimby.
"Sorry man, I'm already driving someone else. You're gonna have to ride quimby."
"Sorry man, I'm already driving someone else. You're gonna have to ride quimby."
by captaincorduroy September 10, 2011