My sister and her hot friends

My sister is the of the hottest 12yrs around and she has a really tight pussy.  She also has really hot friends and whenever they come over i just want to really fill them up and cum. Well one night they all came over cause they were going out to a party. They all showered here and left their panties on her bed. they were all putting on makeup and i went into my sisters room and took all their panties, dropped my pants and started wanking with their panties. Then one of her friends came in and saw me. she called my sister and all the other girls. one of them sat down next to me and let her towel drop so that i could see her boobs and clean shaved vagina. I already had a massive boner and it just got bigger when i saw that tight virgin pussy. she slid her hand over my leg and up my 7 inch penis. another friend pulled out a bottle of lube and gave it to he girl sitting next to me. she started to pump it slowly and then faster. In under 10 seconds I felt the semen swell up in my cock and explode. then my sister came up to me and dropped her towel, she pushed me back onto the bed and sat across me. She moved her way up my body till her vagina was right above my mouth. i smelt her pussy juices and and then grabbed her ass and started sucking her vagina. I drove her to a shaking orgasmic explosion and felt the juices run into my mouth. I moved her away from my face and started pashing one of her hot friends. I pushed her onto the bed and started pounding her virgin vagina. Once she orgasmed i flipped her round and started filling her ass. I cummed into her lucious ass. i pulled my cock out of her ass and my sister and her two friends all started sucking my cock and balls. This kept going for 2 and a half hours until i ran out of cum and they had to go to the party. We didnt have group sex again but every time they came over they would masturbate into their panties in front of me until they were soaked and then they would give them to me for the week so i could wank with them.