Sex game: “MnF’s Wonder Rub”. Stern and his step sister Harlet live in a wealthy area, their parents constantly go on business trips or vacations, so the brother and sister almost always live alone. Harlet has a best friend, Veronica, who often visits their house and even stays overnight. Stern constantly hears girlfriends complaining that they have small tits and, to help the girls, he bought a breast augmentation cream. For the cream to work properly, someone of the opposite sex should rub it into the boobs, and since Stern was the only man in the house, he would have to help the girls.