They got way more than they bargained for
The statistics say that most people won’t try it in their lifetimes, but more and more people are giving backdoor love a try. It’s definitely not for everyone, but if you’re going to experiment, there are some rules to follow. Go slow, take your time, foreplay is a good way to prime your target, and use lots and lots of lube. These people probably didn’t follow all of those precautions because it wound up being a horrible time with blood, vomit, and way too much of the brown stuff.
These stories will make you put down the rubber sheets first.