Agonophilia - the practice of psuedo rape between consensual partners.
This term can refer to people who get sexually aroused by engaging in a struggle or wrestling before overpowering their partner, or role playing a rape encounter.
Many agonophiliacs initially feel shame in enjoying this sexual 'game', and will not share their desire to have a pretend rape in the bedroom with their partner for fear of them thinking that they desire to be raped, or rape some one, in 'real life'.
Participating in agonophilia does not mean that either partner harbours a fantasy of being raped, or of raping some one.Remember this.The thrill, generally, would be in the feelings of helplessness and power experienced by the couple. Or maybe they just like it rough.
Before partaking in any activity such as this, be sure you trust your partner.