My boyfriend is ultra submissive in just one area: his ass. He doesn’t go for the Mistress thing, lick-my-boot mentality, but when it comes to his ass (which is the focus of his fantasies and always how he’s able to come) he’s full sub. I know exactly what he needs that way, pain and humiliation. Directed at his ass. Insulting HIM gets us nowhere, but insulting HIS ASS does. My snag is this: there are only so many ways to insult an ass. Degrading his ass, calling it a cunt or pussy gets him off in a snap. Is there any way to get good ideas to boost my imagination so play is not monotonous for either of us?
–Mistress of His Ass
Plenty of people get off on pain, humiliation, degradation, and overall submission. Clearly your boyfriend’s submissiveness is tied directly to his ass and anal play. There are many ways to combine submission and anal pleasure. You’ve already insulted his ass, but have you also tried to insult and humiliate him for wanting his ass penetrated, for being a naughty butt boy? Take all the cultural baggage that comes with anal pleasure, and use it to your advantage, as a psychological tool: it’s dirty, taboo, dangerous, and will make him gay. Of course those aren’t true, but these myths can make for great mindfuck material.
If he likes extreme submission, you may also want to explore forced anal penetration or anal rape scenes; that’s tricky territory, so tread lightly. It also sounds like there is an element of gender play in your man’s fantasies, since he enjoys having his ass be called his pussy. Try to explore that part of his desire further. Does he want to crossdress, to be girl? Does he want to be forced to do it? Forced feminization is quite popular and may be part of what he’s try to express in the anal play you’re currently having. See if he will open up about and be specific about his submissive anal desires, and use what he gives you to take things to the next level.