We have done anal for years. Always lots of lube, and prep. "NO pain, all gain", however there is a site online with "goofed up" sex videos and there are a couple videos there of girls "accidentally" getting poked in the anus, when the guy is aiming for the vagina and "misses".

Some look like they "jump from pain" when getting skewered in the wrong hole. Others just keep going, and the guy later goes.."oh sorry".

We just don't see how easily that could happen. A few times during vigorous in and out, he HAS slipped and his tip banged against my back door...but no way would it just "pop in". I am "tight" back there, however, so I don't know about others..in the real world.

Anyone every ACCIDENTALLY gotten anally penetrated like that...actually "impaled" without expectation or prep? What happened?