Entertainment Fashion & Style All About the Smiley Frenulum Piercing Share PINTEREST Email Print Vedi Sotto/Wikimedia Commons Fashion & Style Tattoos and Body Piercings Accessories Tops & Sweaters Dresses Skirts Jeans Pants Outerwear Lingerie & Swimwear Do It Yourself Shoes Skincare Advice Makeup Hair Fragrance Kids and Teens Bumps & Babies Learn More By Karen L. Hudson Contributing Writer Karen L. Hudson is a tattoo artist and contributing writer for Byrdie. our editorial process Karen L. Hudson Updated April 21, 2019 If you lift your upper lip and turn it inside out (while looking in a mirror, of course) you will see a very thin line of skin that connects your upper lip to the gum line. That thin line of connective tissue is called a frenulum. When the frenulum under your upper lip is pierced, it's usually called a Smiley - which makes sense because it's only visible when you smile - or a Scrumper. You also have a frenulum that connects your lower lip to the gum line, and one under your tongue. A frenulum piercing could refer to any three of these but read on to learn more about the Smiley piercing. It may not go through a lot of tissue, but frenulum piercings can be kind of painful. Grab your frenulum between your thumb and forefinger and pinch it. It's a sensitive area. But it's over rather quickly, it heals without too much complication, and it's cute. There are a few caveats with this piercing, though. One - not everyone can get it. If your frenulum is too small, it can't be pierced. Two - it can be prone to migration and rejection because there isn't a lot of flesh holding it in place and natural movement of the lips can put stress on the piercing. And three - it can cause gum and/or tooth damage, which may or may not be reversible. It's important that you keep a close eye on it for any signs of irritation, indentation, shifting of teeth, scratches in the enamel, etc. Jewelry for Smiley Piercings Frenulum piercings are delicate and therefore the jewelry also needs to be small and delicate. This is the only type of piercing that we advocate the use of jewelry as small as 18 gauge. An 18 or 16 gauge CBR that is very small around - usually 1/2 inch - is all this delicate area can really handle. Healing is pretty quick - about four weeks max for a healthy non-smoker.