👉 Knuckleheads are a type of person who has a distinctive, pointed, or crooked finger, often due to an injury that causes them to have this characteristic. They may also have a distinctive hairstyle, such as wearing a "knuckle" haircut, which involves cutting off the ends of their fingers and using it as a fashion accessory. The term originated from the slang term used by British people for those who had sharp or pointed nails.