My Son, a Sexual Maniac(2006)

Original title: Moj sin, seksualni manijak

Tone is convinced that his son is a sex maniac because he is supposedly looking under his teacher's skirt. But he is wrong. While he is obsessed with trying to find the reasons for his misfortune and even makes his wife miserable, his friend hints that sexuality is a matter of genes; Tone comes to a conclusion that he himself is a sex maniac.