One morning, mom got a call from our dad. He needed her to come bail him out of jail. My mom woke me and gave me $100. " I'll be gone until Monday, use this to take care of you and you sister." I was 12 and sister was 9. Mom left Friday morning and said she'd return Sunday night. She also said not to let our neighbors know. I started to complain. She then took out a bag of white powder and made me sniff it. Immediately I felt high. " Do this with your sister while I'm gone" she instructed. Then she left. I snorted another line waiting for my sister to awake. Finally when she did, I explained to her the situation. She didn't believe me and called our mother. Mom answered and told her to do as I say. She hangs up and tells me that I'm in charge. I bring her the plate of coke and have her snort two fat lines. Soon she and I are sitting naked on her bed. I tell her that mom told me to do what I want with her as long as the neighbors don't find out. I'm 12 and my dick hard is 8" long 2" thick. My sisters young pussy never had been penetrated. I've fingered her a lot but never fucked her. I do another two lines with her and she tells me she's ready for my dick. I'm throbbing hard so I get on top of her. I push it in slowly until its all the way in. Then I back out and thrust in again. She yells out loudly. I then pump her harder and faster. I hear a knock on our door as I'm about to come. Our downstairs neighbor let's herself in and sees me fucking my 9 year old sister as I fill her pussy with my semen.