Причёска.

On his birthday, Vitya jokingly makes his hair in the shape of a triangle, which greatly annoys his father-in-law. The conflict grows, Vitya's boss fires him from his job, his mother-in-law calls him a Satanist, and his father-in-law is completely ready to pierce Victor with his own gift - a dagger. As a result, the hero removes the ill-fated hairstyle, but leaves the house.