There's certain kinds of pooping that happens where you really channel the assembly line feeling. I usually find this is a late morning phenomenon. There's some initial stool to get out of the way, and then there's a bunch of similar bits of stool that aren't going to come out with one clean exertion. So you get into a rhythm of moving your muscles (which ones? I should know) to make discrete poots, and ideally you get a sound from each one hitting the water, too. And you're like it's me, I am the factory, and it's a poop factory. It also makes me think of one of the drills with the three-armed handle that you lower to drill in say plexiglass. Also like the kind of pooping referred to in the Key & Peele church ladies defeating Satan bit.
Not unrelated: I woke up this morning with an idea for a performance piece. It would involve a small conveyor belt, reaching like 6" off the ground. The belt would move a halved avocado, sans pit, underneath (or thereabouts) the performer, who would then be tasked with trying to fill the indentation from where the pit was with urine without overflowing. After one avocado, the conveyor belt would advance and another halved avocado would be there. This could go on until the performer was out of urine. Maybe you could rotate performers at that point.