When teaching stepmom self defense goes wrong

I asked my stepson to show me a couple of moves that I could use against someone, should I ever need it. He does not hesitate to show me. Its so important to him that all women learn this. But things start to get a little different. The way his hands are on me, and his legs wrapped around me, holding me down. I can’t move. Whats wrong with me? Why do I like this? I need more. I ask him to act out the person more aggressively. I can see the confused look on his face when I ask him to show me how someone could spread my legs open and hold me down. He opens my legs and pretends to rip my panties off, but I urge him to do it for real. When he slides my panties down, the wetness on them is completely obvious. I see the fire light in his eyes. He pushes me down and puts his cock on my lips. He slaps me and tells me to open my mouth. My pussy is tingling so much. I do as Im told and suck his dick. When hes had enough, he p