Meth ass 

An ass that looks as if it belongs to a meth addict; a non-existant ass; a flat butt on a male or female. Usually meth ass is more noticeable on females due to tight jeans, however, no jeans would be tight on a meth ass.

She has got a serious case of meth ass.

Meth ass by Jamglee December 7, 2017

Ass-meth 

The intentional placement of meth into ones ass with the intent to use at a later time; usually while incarcerated. Often dispersed to fellow inmates. Commonly laced with fecal matter.

Can you believe all those inmates shared his ass-meth.

Ass-meth by Eric whitefoot October 3, 2021

Ass-meth 

The intentional placement of meth into ones ass with the intent to use at a later time; usually while incarcerated. Often dispersed to fellow inmates. Commonly laced with fecal matter.

Can you believe all those inmates shared his ass-meth.

Ass-meth by Eric whitefoot October 3, 2021