Definitions by The real D Sinjin III

shit in the back seat 

a phrase referring to a female's big and phat ass, also known as Junk in the Trunk.

damn girl, you've got a bunch o' shit in yo back seat

have you seen my new baby mamma? she got some shit in the back seat!

shit in the back seat by The real D Sinjin III July 16, 2010