I have seen a lot of stories online of people getting things stuck in there and doctors having to remove it, even items like cucumbers. I get that an item with a highly irregular shape could get stuck. But if it’s something long and rounded, why can people not just poop it out? Is it because the item isn’t soft enough?
I’m going to leave this here, supposedly the precursor to the BDSM thing. It’s about horses. It’s not nice to the horses. https://en.wikipedia.org/wiki/Gingering
Before it was a BDSM thing, it was just a form of corporal punishment called figging. https://en.wikipedia.org/wiki/Figging