Slutty sisters fight over their stepfather\'s cock

More than sisters they were best friends, so when one of them confessed to being attracted to her mother's new husband, the other helped her fulfill her fantasy. They convinced their mother to go out and buy them groceries, while she snuck off to her room and dropped the bombshell on him. Just as she expected, he didn't wait around and as they began to kiss, they were interrupted by his sister. He didn't seem to mind and his sister, though a little annoyed at not having him all to herself, accepted her into their kinky threesome of enjoyment and madness.