I have a tongue piercing and I will get a belly button piercing soon too. They are just jewelry, right? But I know that tattoos are sinful, but why tattoos are sinful? Or are they just the certain tattoos that are sinful, like tattoo pictures of the Devil or a demon, something evil, etc? I want to get a tattoo, and I want the tattoo to either be a picture of a polar bear, Slytherin symbol, or something about Severus Snape, or some Japanese text.