Black Teeth
Ohaguro was the practice of dying one's teeth black with a drink made of iron, cinnamon, and different dark spices. This was extremely popular in Japan in the late 1800s-1900s. Even though this looks strange and grim, the cocktail actually protected people's teeth from rot.
Victorian Piercings
Men getting their genitals pierced was a popular practice in the Victorian-era. Have you ever heard of a "Prince Albert"? Yeah, that was Queen Victoria's husband.