Definitions by Turkey Dump

flatter than your momma's chest 

An insult used to describe how flat something is.

From the movie Smokey and the Bandit Part 3
(Examining the flat tire on their car)
Junior: It's flat Daddy.
Buford T Justice: Flatter than your momma's chest.

flatter than your momma's chest by Turkey Dump April 12, 2016