Remember the pain you felt when you inadvertently touched a hot surface. We're confident that the pain will be less intense than if you were to touch molten lava.
Have you ever imagined touching molten lava-like metal with your bare hands? This is exactly what can be observed in an outdated video, which is detrimental to obtaining traction on social media.
The video depicts a man, who appears to be a plant worker, sitting next to a stream of molten lava-like hot liquid metal while not wearing his safety glove. He quickly begins slapping the liquid metal thrice, perplexing the netizens. However, the man is uninjured and even reveals his palm, which is free of injury signs. More than 3.5 million people have watched the video.
Surprised why the worker did not suffer any burn injury? Thanks to the Leidenfrost effect. 
The old video, which went viral a few years ago on social media platforms was again shared by a Twitter user called Science Girl and she explained the principle behind the man remaining unhurt despite slapping molten metal. 
In the post sharing the video, she said. “A really dramatic example of the Leidenfrost effect the moisture on his skin boils instantly, forming a layer of steam that insulates for a very short time, a temporary barrier between this person and the molten metal.”
The post got some responses that help users understand the Leidenfrost effect in a better way.  
“A more traditional way for it to be understood. The water hits the hot pan, which is hotter than the waters boiling point,  a vapour layer is created that repels the water from even making contact with the metal so it kind of hovers,” said another user. 
It depicts water droplets forming a starfish-like structure and whirling around what looks to be a hot pan.

The video has perplexed the internet, prompting billionaire Elon Musk to respond. "Do not attempt this at home," he warned in a tweet.
Another, user claimed that this is the same trick used by people who walk on hot coals.

The video of the man slapping boiling molten liquid originally went viral in 2018. The man was identified as Arkady Mgdsyan, an Armenian steelworker, in articles about the video at the time. The liquid metal was described as molten steel, at a temperature of around 1,370 degrees Celsius (2,500 degrees Fahrenheit).

According to the story, Mgdsyan learnt about this impact from his coworkers, who had practically all accomplished this feat, which is a steel mill tradition. The technique is kind of a rite of passage for professionals