Not even in my wildest fantasies had I imagined myself naked on a bed, playing with Giorgio's cock in front of my aroused sister, who was inviting me to stroke it. I did so slowly, almost timidly..........then, overcome by arousal, I leaned over and began licking and sucking it, looking into my sister's eyes as she masturbated, aroused. When he reached the height of pleasure, I didn't resist at all and savored his cum as if it were the finest custard..........and at that moment my sister also came, moaning like I'd never heard her do before.