I finally have a new place of my own and my brother has come to hang out with his sister by the pool. My brother catches resting on the couch in my little bikini rubbing myself under my towel. I tell my brother how happy I am he was able to spend this whole day alone with me and begin to remember old times. Did he love hanging out watching his sister by the pool in her little bikini when we were teens? Does he remember the day I took my top off and exposed my tits to him? I do I remember how hard my brother got while looking at his sisters tits? Would he like to see his sisters tits again? I know his cock is hard for his sister I want to see it.. Will my brother show me his cock...I encourage him to masturbate for me JOI. Through out the jerk off instruction JOI I talk about old times and how much he must want to cum all over his sisters tits. I keep up the JOI while getting into it and masturbating through my bikini fabric. JOI all the way to the end while I encourage my brother to cum all over my tits. Soon he shoots his load all over his sisters tits. Multiple angle cumshots and even slow motion cumshots in this brother sister sibling fantasy JOI. Then I use my little bikini top to clean my brothers off my tits and his cock. I stand up showing off my little bikini bottom and suggest we continue to have some more fun;)