Very vicious mother asks her son for help with the wedding dress

This very vicious mother's new wedding is approaching and she wants to make sure that the wedding dress fits her perfectly. Her future husband can't see her, so she asks her son to lend a hand so she can zip up, because she doesn't get it. Then he sits on the bed with the topless and tells his son that he is worried, because he does not know if he can fuck only one person for the rest of his days. That makes her very horny and throws herself to eat her son's cock, fucking him after a very brutal way.