Mon beau-père se change devant moi. Partie 2

With his wife out of town, he is alone with his mother-in-law. When his mother-in-law comes to help him with the housework, he accidentally peeks in on her changing clothes, and the adult sexiness of her, which his wife does not have, causes a hot erection between his legs. She is no longer satisfied with hand-fucking and blow-jobbing, and finally crosses the line.