I would have to agree. While some people that are more used to that sort of thing (or is it just "more used"Originally Posted by Barton
) might indeed have little difficulty, most would experience great deals of agony, and not in a good way, without some form of lubricant to facilitate the entry.
The anus doesn't get wet like the vagina, so trying to cram a cock or plug into it without some kind of preparation or facilitator could lead to disasterous and potentially harmful results.