Mother drinks a bit of wine and is ready to fuck his son

My mother has a problem with alcohol or with the pussy, I’m not sure. I just know that can never control his desire to fuck when drinking alcohol. So every time you are alone with her in the house, I have to remove the bottles or I won’t be able to stop it. This time there was nothing I could do, he had drunk a couple of glasses of wine and was soon desperate to open the zipper of my pants. I wanted to finish this before my father, so I left that can make me a blowjob. It is sitting on top of me and I fucked hard, and then I put on four legs to penetrate from behind. My mother is a real bitch.