This is my first story, so don't be so hard on me, and i am not that good at english, but just give me your oppenion :)The day my sister was home from schoolIt was really hot outside and i was just finished school, my girlfriend had just broken up with me, i was 15, and my now ex-girlfriend was 16, i always had a little something for a little older girls. I walked home alone this day, and i saw my sister's car was home so i ran inside and got a glass of water and walked up to her room, she had her door locked, so i just asked if i could come in, and she said "Just a sec bro" i heard a zipper go up, and she unlocked the door and invited me in, i saw her computer was on, but she had obviously turned the screen off when i came in. I sat down on her sofa and turned on the tv, she had the biggest tv in our house, so i loved watching her tv. Me and my sister had always been kinda good friends so i was used too watching her tv when she was surfing on the net. This day i watched Friends, while she was surfing, she said "hello, are you there bro?" i did not answer her, because i was so into the show, so suddenly i heard a zipper go down, and i turned around seeing Joan move her arm slow in sex movements, i walked in on her slowly from behind, and saw what she was looking at, it was a guy with a big dick fucking this ugly chick, she was masturbating too porn while i was in the room. I was shocked, this had been a dream come true for me and i felt my dick grow in my pants, suddenly i felt my dick touched her back from where i was standing, and she turned around and said "what are you doing? I thought you were asleep" she blurted and ran out of the room. I walked out of her room and walked against my own room, suddenly i heard Joan's voice say "oh no you don't go away on me now lil bro, you come with me" and she pulled me inside her room and pushed me down on her bed, locked the door took up some of her clothes and binded me to the bed by my arms and legs, and said "now, since i am your older sister i'm in charge, so you just shut up!" and she unzipped my pants, and pulled out my dick, and began too pull my dick slow at first, and then faster and faster, suddenly she covered my dick with her mouth and sucked me real good, she sucked it like a pro, "oh fuck, you taste so fucking good, bro, now cum in my mouth!" She sucked me for another 7 minutes until i shot a big load in her mouth, she got the biggest smile i've ever seen on her face while i shot the last load in her mouth, and she started kissing me with my cum in her mouth, and she said "taste your own cum bro, you'll love it" I have to say it didn't taste that bad, we suddenly heard a sound from downstairs, it was our dad, mom, aunt, uncle and cousin. We had forgot we were eating dinner everyone of us here this day, our cousin Emily, she was 21years old. She came up to Joan's room and knocked "can i come in cousin?"Joan said "yeah, just wait a sec" and she unlocked the door, and dragged Emily inside and said "remember you told me you love Jim?" "yeah, i still do, i want to make love to him some day" Emily answered, Joan turned Emily against me, when she saw me with my dick out of my zipper she smiled from ear to ear "Is this really true" she said. Joan pinched Emily in the arm and said "yes it's true cousin, i've just sucked him off, and he is ready for fucking the both of us, he is a virgin" Joan asked, Emily answered "yeah, i talked to Jim for 3 days ago and he said he was, so i know"Joan smiled and said "okay, you can ride him first while he licks my pussy, okay?" Emily smiled and said "okey, but first we have to eat, the dinner is ready", and then Emily walked out of the room and downstairs again. Joan said to me "okay bro, you are ready for us after dinner right? i will tie you to the bed again then" she smiled and untied me and ran downstairs. I took on my clothes and walked downstairs, we had a table for ourselfs while our parents where on their own table some meters from us.