Is it normal to fantasize about forcing my boss to have sex with me?

My boss is a hot young female, she is around 33-34, and she always wears either classy business suits or beautiful dresses with sexy skirts and heels. I often have a fantasy of walking into her office and pointing a gun to her head and making her suck me off. Of course I would never do that, but it is something I think about that gets me hot. I even made up a story in my head about what could happen next. I would take off my belt and my pants and she would bring her lips up close to my crotch, but then she would punch me really hard in my balls and then kick the gun out of my hand. I would fall to the ground in pain and if I tried to physically dominate her she could just kick me in my balls again or step on them in her heels and knock me out. She could continue hurting me down there while she whispered in my ear in a really sexy way that I was going to spend the rest of my life in prison.