Compilation of constipated girl

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There is a lot of fascinating 'neurology' at work going on inside the womans body and brain. 'Sensors' in her rectum are triggered by her stool arriving, telling her brain that it is there. She can then 'signal' her outer anal sphincter muscle to 'close' and keep it inside her uintil she's ready to go to the toilet.... when its convenient. But she can only do that for so long. Eventually the "feelings" she gets from the sensors in her rectum will start to overload her brain and become more intense and frequent. She will need to consciously message her anus to close more often. If she ignores them much longer the 'feelings' become more intense and 'urgent'. He ability to keep her bum closed will become much more difficult>
Once on the toilet (or at a conveneient place) she will relax her bum muscles and allow her stool to exit. Sensory nerves will detect the position of her stool and tell her brain so that she can send messages back to her anus to push or close.
I find this incredibly erotic.

My favourite parts of a woman shitting is seeing her "work" her anus. I love the way she pushes and tightens it as she begins to push it out. She starts by 'manually' doing little pushes and contractions of her bum.. then pushes again. As it begins to come out, her anus starts to work 'automatically'. Evetually her bum takes over the job for her and pushes it out by itself with no 'input' required from her. As she finishes, her bum closes 'automatically' .... but then she takes 'manual' control again by 'squeezing' her bum so as to close it nice and tight.