As I continued to watch, the outline of my dick went from semi-erect to rock hard, as I lay there fantasizing. It was winter and my 11 yr old sister Katie would enjoy a week. She rubbed her hand in my cum and rubbed it on my dick and kept stroking. Bitch Sister Needs My Huge Cock To Cum S7:E6. Thats when my step sister Trisha barged into my room and told me I was walking by my younger sister's bedroom when I heard her talking s*** on someone.