My sister yelled for me from her room so I jumped up to see what she wanted. Her friend Karen was there and I had to say hi to her and my sister was like OH MY GOD,,get a room you two. Karen and I have become friends but I doubt she would go any further.We like each other but she likes her boyfriends to be the foot ball type and not the boy in satin panties kind of boy.Any way she handed me a stack of her old clothes just as dad walked in and he looked at me funny and asked if I was fixing to put those clothes on were you,I told him no and he asked me if I remembered what he said would happen if he catches me wearing my sisters clothes again.I said yes I did and at the same time we both said that if he catches me dressed up like a girl again he was going to make me suck his cock like a girl. Without thinking a said sister dresses like a girl,,do you make her suck your cock??Daddy said " she dresses like a girl doesnt she"then walked away really fastMe and Karen looked at my sister and Karen asked "You suck your dads cock??" I have never seen my sister turn so bright red,she looked like she was about to cry so before any one could think I blurted out"Its ok,,im fixing to start sucking Daddies cock too" Karen said she had to go before she had to suck our dads cock too. We were laughing so hard when we came down the hall that we had to hang on to each other and when mom asked what was so funny we had to run out side and were rolling on the ground because we were laughing so hard.. Karen left and I pulled my sister in and gave her a long hug and told her that it was going to me alright .With a tear in her eye she asked me if I was going to take her place,,I didnt hesitate and told her that I was going to d it because I loved her so much. Kelly lost it and started bawling as hard as she could and I went into my room and changed clothes as fast as I could,,threw a little makeup on and went to find my father.When he saw how I was dressed he asked me if I knew what that meant and I told him I SURE DO.Then I looked him dead in his eye and told him that I was going to be taking Kellys place..he looked like he shit his pants and not another word was said.I dropped to my knees and battled through it and gave Daddy my first blowjob.When Kelly saw me a few minutes later she said YOU DIDNT,,I smiled and nodded and went to brush my teeth.Kelly didnt have to suck Daddies cock ever again