Looking for an excuse to fuck his own sister

Getting to fuck his own sister is going to become the great milestone in this uncle's life. He has drawn a master plan with which he intends to put his cock until he gets tired. She tells him to please sew a button on her pants and with that she is already naked in front of her. He puts his hard tail in front of his face and insinuates that if he likes it, he could put it in his little pussy so that the two enjoy now that they are alone at home. She lets herself be persuaded and fucks her, watching how the slut rides him and how he moves her ass with his tail in a most professional way.