My Dad And Sister

When I was 16 my sister was an over developed 15 year old. My mom left us when we were 10 and 9 and my father was a great dad. He was hard working and was always there for us.

One night I got home from a concert and I peaked into my sister's room to check on her and she wasn't there. I assumed she was sleeping at a friend's house. I then heard voices coming from my father's room. The door was open a crack and I can see my father. He keeps shaking his head no and saying no, you're my baby. Then I heard my sister begging my father. "Please Daddy! I love you! I want to make you feel good! Please! Please let me suck it!"
She was not taking no for an answer. She grabbed it and started sucking! He stopped her but then she fought back and sucked it again. He finally just gave up and let her keep sucking. Watching this made me so fucking horny. I always dreamt of my sister doing it to me. She was taking the whole thing into her mouth and throat. She was gagging and spitting all over his cock. Then she took his balls in her mouth and swirled them around as she jerked his cock. Then I heard my sister beg him to cum in her mouth! Begged! "Please daddy! I need it! I need to taste it! I need your cum! Please Daddy!" She whined and cried for him to empty his load in her mouth. She feverishly sucked and sucked until finally my dad grabbed her hair and thrusted all the way into her mouth. My sister was moaning and screaming with a mouth full of cock and cum. She gobbled up every ounce of him. She crawled up Dad's body and kissed him as she slid his still hard cock into her barely virgin pussy. They continued to kiss as my sister road the shit out of Dad's cock. It didn't take long and my sister was cumming. "I love you Daddy! Fuck me Daddy! I'm cumming! I'm cumming! As all this is coming to a close I was jerking off and I came all over my Dad's bedroom door! I don't know how long this has been going on but I know it happened until my sister graduated high school. They both dated but they would always come home and fuck each other. They didn't care if I knew or not. They didn't try to keep it a secret anymore. One time my father's date even joined them. It just stinks that I was never asked to be a part of it. It breaks my heart to this day.