The only time vape juice will burn your tongue is if the vape isn’t working properly. If the coils are successfully vaporizing the liquid, no vape juice should get in your mouth — only vapor. If you hear a popping sound or see or feel tiny drops of the liquid shoot out from the vape, you have an issue with the coils not heating up properly. Either your batteries aren’t reaching an adequate voltage, or the coils are damaged or dirty. First, check to see if the coils need to be replaced. If they are new coils or look totally fine, make sure that your batteries are charged and working properly. You may need to replace the batteries or adjust the wattage until the coils can reach a temperature that will vaporize the liquid. Be sure to clean up any vape juice that pools around the coils. That flooding will clog the vape or create more tiny drops of hot vape juice.