Enchanted by a cock so big

I Am jealous of my sister for a month now. He started to go out with a man of color very attractive. And I was almost sure that his cock was huge. This is what has made me the most jealous of. One afternoon he came home drunk. Was looking for my sister, but she was gone. I did sit on the couch for her. But it was almost devoid of meaning. In her state, I was sure that you would not be reminded of anything. So there I thought and I took his cock. As I had imagined, it was huge. I made him a blowjob before my sister. And the erect penis was even bigger. I am convinced that his cock does not enter fully into the vagina of my sister. I was really excited for his greatness.