A Bottomless Pit? No, but never swim near a water hole like this. If you do see one of these, you're too close, and you better paddle your butt off to get away!! Here's a Link ...
I mean come on.. black guys are the smoothest dudes on the face of the planet.. old white preachers don’t use the word “butthole”.. an old white preacher would say something ...
arse or ass, asshole, and (butt-)hole - a pars pro toto (strictly only the actual body cavity and directly adjoining anal region); also used as an insult for a person.