Rear Shelf Edit Meaning

1.

1) A raised flat portion of a sedan or coupe that is usually located behind the second row of seats. The rear shelf is on the same level as the trunk of a car making items placed upon them visible through the vehicle's rear window.

2) Someone with such a huge fat ass that you can place items on, for instance the entire Encyclopedia Britannica.

Dear god! Why won't the rear shelf stop making noise? Please kill me now.

See shelf, shelves