We’ve all done it. Taken a bite of food that is scorching hot – and no matter what burns your tongue or mouth, it always hurts! But what actually happens when you burn your mouth? Mayo Clinic dermatologist, Dr. Alison Bruce says that mouth burns are typically first-degree burns and damage cells in the outermost layer of the skin on your tongue, roof of your mouth or the inside of your cheeks. Your mouth also doesn’t have a spongy or fatty layer underneath the skin making the burns a lot more painful. So next time you bite into a sizzling hot piece of pizza, take a swish of cold water to reduce and decrease swelling. Or just be patient and let your pizza cool off first!