Sub in the trunk, thumping up against the dead cops
“Sub” is short for subwoofer, a large speaker that adds bass. They are responsible for the vibration one feels when a car is blasting music. The speakers in Earl’s car are shaking the bodies of the cops he killed, which is something he will discuss later in the song.
To help improve the meaning of these lyrics, visit "Epar" by Earl Sweatshirt (Ft. Vince Staples) Lyrics and leave a comment on the lyrics box