An Ass-Hair
Mullet is the hair thats located on a persons lower-back above the waistline or the "small" of the back. An Ass-Hair
Mullet is when this patch of fur or body hair is pronounced,
thick with growth, or is particularly volumous and impossible to conceal or ignore without grooming. Also known verbally as an Ass-Crack Mullet depedending on which region of USA this slang term is used.
Ex. Thomas has elected against upgrading to the office furniture the company has purchased for us since he has an Ass-Hair
Mullet so
thick, pelt-like and cushiony he has no need for an ergonomic desk
chair with adjustable lumbar support.