At 13 all I could think about was jerking off. My cock got hard and i needed to relieve it. During a morning jerk session, my kid sister walked in. It was right after our parents left for work. She was still in her sleepware which consisted of panties and a night shirt. I noticed her right before i was about to come. I stopped and asked her what she wanted. She stared at my huge cock and asked me what i was doing. Jerking off. Why? Because i have too. Again she asks why. I tell her because i am always horny. I elain to her horniness. She offers to help. I tell her that my cock is going to hurt her vagina if i put it in her. She tells me that its ok. Her 9 year old pussy is tight. I rub it and feel it get wet. I go down on her licking her clit. Soon she is ready and i mount her. I push my huge cock against her opening and feel her cringe. I enter her young pussy slowly,stretching out her vagina. She lies there paralyzed. Then i fuck her faster and faster. Soon im pumping her hard. I come in my sisters tight young snatch,filling it with her brothers seed.