I did end up doing a search about this and as one poster here said, apparently this is a real kind of porn and is very popular with many millenials. I have to say that I am having a very hard time understanding how this evolved like this. I honestly can't blame the OP for feeling so lost with this challenge either. Also, it's mostly men too, and it's strange because the my little pony popularity was mostly a little girl thing. I don't get it, I don't get how this became a porn thing for males. I am really at a total loss with this and genuinely feel sorry for the OP. It's a real thing but there is nothing that discusses the why of how this happened/happens.