I devised a game for this session.  In this game, Dave would tie up his balls using string.  I would have control over whether or not the strings tightened.  His part would be to masturbate and attempt to cum.  It was a race: if he could cum before I had him tighten the strings enough to castrate himself.

He wasn't keen on this game.  I had to threaten him with public exposure, and he finally relented.  I imagine his protests were only designed to make me threaten him, thereby arousing him.

We began and I asked him a series of questions, in order to distract him from masturbating.  I asked him if he had been raped or had raped anyone.  He answered no, but admitted to having rape fantasies in which his "girlfriend" dresses him in women's clothes and "Tying me down and a guy fucking me while I'm gagged and cuffed....It's hard to stay hard during this topic.  Can we change it?"

I absolutely would not change it.  I drew parallel's between his mother and his "girlfriend":  "That's the kind of thing your mother would do: abandon you when you needed her, stand by and watch you get hurt....Do you fantasize about your mother watching you in sexual situations?"

He questioned if I was really trying to castrate him.  I was only playing the game, I answered.  Then added:

"In the rape scenario with your girlfriend, if your girlfriend mirrors your mother, is the raping male figure your father?  Is this how you're able to feel closeness with your father---being joined through the violence inflicted by your mother?"

He begged me to change the subject and said again he was having a hard time staying hard.  He asked if he could have a toy: a buttplug, small but still significant.  Testing him further, I had him use Deep Heat as lube on the buttplug.  He attempted to fight me on it, but gave in quickly.  The exchange following is astounding:

"It's in...It's hot already...It's hurting...Please.  Let me take it out?"

"You can use your safe words if you need to.  Suffer the penalties of course."

And then, a long delay before his response:

"I came.  So hard.  I've not cum that hard in a long time.  It was intense as hell."

The fear of castration, the incestuous, violent images of his mother, fantasies of forced feminization and rape, and severe rectal burning all contributed to his orgasm.  One, he observes himself, which is the most intense he's had in a while.  

I'm afraid that Dave cannot divorce pain, humiliation and sex.  I believe this has roots in his childhood, something traumatic that happened with his mother, perhaps also abuse by his beloved father.  This need for pain and suffering very likely could branch out---where hurting himself for sexual pleasure will lose it's potency and he must hurt others.  Most likely little boys, replaying a scenario of violence he himself suffered in his childhood.

Images of women tied up and gagged are powerful, not because they give the view feelings of being empowered: we the viewer being in the position of she/he who has tied the women up.  

It's because the women themselves are examples of extreme holders of power.  We don't tie up the weak.  We tie up the strong.  We tie up those who can dominate and destroy us.  Women have always been seen as powerful, even magical figures when it comes to their allure.  The best example being the femme fetale, who moves like a force of evil through the world and men nearly helpless before her charm.

What is more, the women know they are this powerful, and subordinate themselves as a form of release.  They alleviate the burdens of their own power, and become a thing without agency.