pooping partner 

When pooping in a public restroom stall, this is any individual that is also pooping in an adjacent stall, either on the left or right or both. Having one or more Pooping Partners is generally undesired as you are often subjected to your Pooping Partner's loud grunts, snorts, and flatulence as well as having to deal with the smells of your own defecation mingling with theirs.

I hate having pooping partners. Took me 30 to find a bathroom with only one stall.

My pooping partner today almost gassed me out. Couldn't breathe for my entire shit session.

I heard my pooping partner grunt like a dying goat.

pooping partner by GinMouse September 25, 2019

Partner pooping

Partner pooping is the act of sharing one stall together pooping through your friends opened legs sitting on their lap when he has to poop to.

Person one sits on person two's lap to partner poop together.

Bill sat on John's lap for a partner pooping session since all but one stall was full.

Partner pooping by C. Cream November 10, 2022