back of ass 

Terrible smelling, like warm, stale, canned ass, but worse. Nasty!

I know that you guys are used to your apartments smelling like back of ass, but don't trash my place.

back of ass by Mark Hopewell September 13, 2004

I know it like the back of my ass

phrase.
refers to an unknown area. the opposite of the common phrase "i know it like the back of my hand". Originates from the fact that most people (unless they are porn actors/models) are quite unfamiliar with the backs of their asses.

Joey: oh look that chick lives in Ismay, Montana. I know that place like the back of my hand. I'll get laid for sure!

Tommy: shit, I know it like the back of my ass.
(walks away defeated...)

I know it like the back of my ass by RedDan69 February 21, 2011

snap back comma (,) the old dusty ass trail (postal code 10457-2219 on the topic of zippers)... 

What I call homo-sapiens who are addicted to abscesses.

Person 1: Are you addicted to abscesses?
Person 2: Yes.
Person 1: snap back comma (,) the old dusty ass trail (postal code 10457-2219 on the topic of zippers)...

snap back comma (,) the old dusty ass trail (postal code 10457-2219 on the topic of zippers)... by LeSouffleDeVersailles January 25, 2025

Get what you need of my nuts bannging on the back of your assahhh 

Korean slang used by the front wall stocker at gardners supermarket.

Ahhhh Peyton, Get what you need of my nuts bannging on the back of your assahhh

Get what you need of my nuts bannging on the back of your assahhh by Getwhatyouneed69 January 20, 2022