idk, unlike the vagina, objects can become "lost" in the anus, if you get it past the rectum, you don't have any muscles in your intestines to push it out.
that's why "anal toys" are usually flared at the end. not that I would know...
girls talkin about anal ...

love it...and yea it does look like its comming out the back door, even more embarrasing if it was a guy.