My sister thought I was her bf

My sister thought I was her bf at a costume party

Hey my name is X I’m 15 male around 5’8 w a average dick around 6 in. My sister Michelle is 16 and she is the hottest girl I have ever seen. She is blonde 16 c cups and a big ass.
This story starts off in halloween night. Me and my sister where having a party at our house. It was a pretty big party. My sister’s bf jack called me and told me that he wasn’t gonna be able to make it. He asked if I could I dress like him and show up so my sister wouldn’t be mad. I changed into his costume went down and got greeted by my sister. A couple hours go by blah blah blah. And by the end of the party my sister was a bit drunk. She was so drunk she couldn’t really walk straight. I helped her go to her room. When we got to her room she started taking my pants off. I said ” wow wait Michelle what are you doing” I’m guessing the mask I had on covered most of my voice which is why she didn’t notice it was me. “I’m going to blow you” said Michelle. She started sucking my cock and boy was it good. She was sucking like a pro. In less than 5 min I came in her mouth. she licked my cum off her lips and said” ok jack I want you to take my virginity” I was incredibly surprised by the fact that my sister said she was a virgin after that good ass blowjob she gave me. My sister started started undressing she looked so how w her black areolas. She was wearing a sort of g string and no bra. I was so horny I said fuck it. I am going to fuck her. I threw her in the bed and told her “Michelle open your legs” she opened them. I started fingering her getting her wet enough. My fingers felt so tight in her pussy it felt sooo warm. After around 7 minutes I could tell she was coming because her pussy got extremely tight to the point where my fingers where starting to get crushed. She moaned loudly ohhhhhhhhh and came. I didn’t let her get a chance at rest I was Soo horny ay that moment I just got up between her legs and aimed my cock at her pussy hole. I pushed in hard and broke her hymen. “Stop jack your hurting me” I didn’t listen I just kept thrusting in. The mask got way to hot for me so I took it off. ” Hey Michelle” I said. “WHAT THE FUCK ARE YOU DOING X GET OFF OF ME” said Michelle. ” No Michelle your pussy is so good I can’t get off”I said. “X I am your sister please get off” I still didn’t listen I kept fucking her. Eventually I could tell she was enjoying it because she was moaning. Like ohh yea ohhh yes ooohh yeaa . After a couple of minutes I said. “Michelle I’m gonna cum” Michelle said ” don’t do it inside please I’m not on birth control” I didn’t listen I just kept fucking my sister’s tight little pussy. I told her “I am going to cum inside of you” she took this in a negative way and started to try and push me off of her. I began to slap her ass so that she can calm down. After a couple of minutes I blew my load into her. She started crying calling me a dumbass and a jerk. I told that from this point on I’ll fuck her whenever I please. To make it more believable I told her that I had her recorded on video and that I’d show everyone her naked if she told any one about what happened. I also told her to break up w Jack which she did do the next day. Fortunately enough she did not get pregnant.

Hello everybody side note. This is just a fantasy nth real I plan to write all types of fantasies so that everyone can enjoy lol. You can follow my insta @umxlige

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