I don’t even understand the appeal for either of the involved parties. I don’t want things in or around my asshole, nor do I want any involvement with those of others. For reasons that completely elude me there seems to have been a cultural shift during my life from butt stuff being deviant behavior and fodder for jokes to almost a default expectation.

I don’t actually believe that it is a common expectation in real life dating between actual non-terminally-online people, but it certainly seems to be portrayed as such.