Not in front of my grandfather! The dog is an exhibitionist

The girl took her boyfriend to spend a week at her grandfather's house. The old man has money, so the uncle's house in almost a mansion and she takes the opportunity to have a good time there. As the old man has deafness problems, this little boyfriend's boyfriend takes advantage of it to fuck her next to the old man without him noticing. First they get playful at the bar. While the kid talks to his girl's grandfather, the dog kneels in front of him and begins to kill him; after that preamble, the kid gets with his girlfriend behind the old man, when he is reading the newspaper, and they start to fuck. This dog is an exhibitionist!