To tell you the truth, considering the age of the brother and sister, it is quite normal that the brother became aroused by the sight of the naked girl in front of him. Maybe what happened next is not part of the plans of normality, but tell me honestly, would you resist such a dark-haired beauty? That's what I mean.
Many girls dream of becoming sluts and working men's penises right on the street. So they deftly take in their mouths or expose their slits. Here and these beauties guys do not even consider it necessary to undress - their main task is to pull them down and send them out on the streets. Maybe one of them will become a model or a movie star, but they'll have to fight for the job. And then there's the Negroes, and they'll go around in circles. Some of them will be lucky enough to get sucked off in comfortable conditions and for good money.
The blonde, as I understand it, is in the full care of the guy. So I do not see anything surprising about the fact that she meets him from work in an erotic outfit and with wet holes. More interested in the question - and on the stove, too, all ready, or just his dumplings prepared? Because he is such a man, he also wants to eat inadvertently.