Let me study! I'm going to have to break the shell

Studying like a nerd to be able to enter the university with good grades, this kid can not concentrate because the slut of his younger sister spends it putting his ass in the face. When his mother was cleaning the house and he was in the kitchen reading books, his sister's incestuous dog approached with a tiny thong and began to wiggle her rich ass in front of the kid's face. The kid, annoyed by the actions of his sister's whore, tried to have the girl lay aside and leave him alone but, the young girl wanted her brother to fuck her, so she insisted despite her mother's scolding and fulfilled its mission. Fucking with his brother and inviting his mother to accompany them.