This is the second part of a short series "Brother, sister and friend." I would recommend reading chapter1 before reading this story.
Laura in a matter of an hour or so had changed the relationship between my sister and I forever. I had been instrumental in bringing my sister to an orgasm that had shocked us both. I had not realized, that other than in porn, females really experienced orgasms like that. Laura insisted that Karen admit that the orgasm I had given her was as good as any she had ever had. Much to my amazement neither female had realized that I had had my own powerful orgasm at the same time as my sister. I had been able to clean myself up before returning to the poolside. Karen still seemed shocked by what had happened and Laura was not making things easy for her. I was delighted to see that both girls had remained topless but Karen had replaced her bikini briefs.
"I fully admit that I keep my little brother devoted to me by allowing him to play with my body when it suits me, but I have rarely allowed him to experience me enjoy an orgasm. If he is really helpful I have played with his lovely little body. It is lovely to see him quite unable to control his little cock. Mind you I am not sure that Matt is quite as small as my brother. I think that at the very least you should offer to put suntan cream all over his rather nice body."
"If you are so concerned about Matt maybe you should offer to help out."
"Matt would you like me to cover you with cream or would you rather your big sister did it?"
My god the day was getting better by the minute. Not in my wildest dreams had I imagined the sexy Laura putting her hands on me. The idea of my sister touching me was frighteningly just as arousing. Laura didn't wait for an answer but upped the ante by turning to my sister and adding,
"I can't wait to see what he is packing, I bet you have no idea do you Karen? If you would like a little suntan cream applied Matt why don't you come over here and stand in front of me."
My cock had been interested in what was going on but became a lot more interested and a lot bigger as I approached the seated Laura. I would have liked to adjust my cock because it was tenting my swimming shorts but decided that it would not look cool. Laura took hold of my shorts before turning to my sister and asking,
"Would you like to do the honors or may I?"
Karen looked stunned by the question and it was clear that she was not going to answer. From being firm my cock became fully erect before the goddess in front of me added,
"Oh thank you Karen I was hoping you would let me."
With this she started to pull my shorts down without pulling the front clear of my erection. She kept pulling until my cock was pointing down at a painful angle until it suddenly became free and slapped my stomach hard.
"Oh dear I hope that did not hurt. Here let Laura kiss it better for you. That is very impressive Matt I have seen a number of fully grown men with less where it matters."
My erection was so hard by now that it was nearly rubbing against my stomach. Laura did exactly as she had said and planted little gentle kisses all the way up my cock until her mouth reached the purple head. Her head stayed where it was as her tongue teased the sensitive point where my shaft met my head. The feeling was sensational and my knees threatened to buckle under me. I had not been completely delighted by her comparisons of my cock to fully-grown men and her next didn't start much better.
"There's a good boy I am delighted that you can control your excitement. The last man I did this to exploded within seconds. That was the end of that particular encounter."
It was a good job I had cum in my pants earlier as I am sure otherwise I would have suffered the same fate. Laura held my erection firmly at the base while she licked me like a lollipop. She demanded without words that I kept eye contact with her as she very slowly enveloped the head of my cock with her mouth. Even with her mouth full she managed to smile at me as my eyes widened. I knew I must not break the eye contact that the dominant Laura was maintaining. She didn't keep my cock in her mouth but alternated between swallowing just the head and licking it. Her hand around the base only moved to tighten or loosen her grip. I had only cum minutes earlier but she was somehow reading my body perfectly to keep me close to orgasm without quite getting me there.
"You really are a lucky girl Karen. He has not only got a lovely dick but he knows how to control it. I love that in a man. If he proves able to control himself a little longer I might be tempted to let him fuck me. Watching you two has warmed me up nicely. I need to have my own orgasm but am not sure which of you I want to give it to me. I bet you have never gone down on a female have you Karen? I might let you choose whether I get to fuck your little brother or receive your tongue. If you lick me to my climax that would leave your little brother to fuck you. I am sure that way you will guarantee having a brother who would do almost anything for his big sister, wouldn't it Matt?"
I was loving the way Laura was teasing my sister and she seemed to be opening up possibilities that I had never even dreamed of. I thought it safer not to answer her question, as we all knew the answer anyway. I was very keen to hear my confused sister's response.
"Would you really let my little brother fuck you? That is just - that is just - not right. It is wrong for so many reasons."
