I think they do that to wipe the remaining “dump” off their ass. It's probably cause it itches them. I'm not entirely sure though. You should ask ChatGPT or something.

As my father always said, the belt can help.

Well, heres a pose you could do. Go in front of me, and face the other way (same direction im looking) Then, get on your knees and put your hands on the floor. Arch your back, and IN I GO.

End it all.