My close sister, whom I can talk to about anything, shyly made an outrageous request: she wanted me to watch her cum because she was scared to do it alone! Right in front of my bewildered self, she started touching her pussy and getting turned on. Having held back her orgasms for so long out of fear, she finally unleashed all her pent-up sexual desire! The pleasure was so intense that she had a massive orgasm with her legs spread wide in a V-shape! But then, she started begging me for my cock! Unable to resist, I shoved my dick inside her, and she kept cumming over and over with her legs spread wide!!