NOPE
Can I lick lava?
No, you cannot lick lava unless you want to evaporate your tongue and end up severely burned.
Lava is molten rock that can reach temperatures between 700 to 1,200 degrees Celsius (1,292 to 2,192 degrees Fahrenheit). Licking lava would instantly burn your tongue and mouth tissue beyond repair. It's not just a bad idea—it’s physically impossible to do without serious injury. Stay away and don't test this dangerous stunt.
Licking lava can cause severe burns and permanent tissue damage. Avoid contact with lava or any molten material and follow safety warnings near volcanic areas.