Humiliated cuckold husband decides to make himself a laughing stock to his wife and sister-in-law naked sketch

Two friends plot a degradation of their wives’ lovemakers. Someone’s MIL paints a erotic picture of his wife, then he sucks it off. A man is another’s sister-in-law draws him and he fails to win against the temptation of the woman. Their wives watch, feeling excited each time they risk it.