A teacher posted a shocking photo online of his rotting tongue this week to warn people about the damage of consuming energy drinks. Dan Royals, according to DailyMail, typically drank five or six energy drinks a day, with some containing up to 58 grams of sugar per serving. 

"That's what that [expletive] does to your tongue, imagine what it's like on your internals," Royals said in a post.

Royals claimed that his tongue injury was the result of the chemicals in the energy drinks. "Up until recently when this started to occur, I was drinking at least 5-6 a day (lack of energy teaching kids usually) and I brush daily, went to the doctor and boom!" he wrote. 

"Found out it's the chemicals in these drinks that are causing it... it literally eats away at your tongue."

Royals, an Australian native currently living in Asia, clarified that he does smoke cigarettes but insisted the tongue damaged was related to the drinks. "I do smoke but has nothing to do with the eating away of my tongue," he said.