Joining a team from Pencils of Promise -- a charity organization that helps increase educational opportunities for the developing world -- the 19-year-old purportedly took his shirt off and got to work, while also taking the time to bond with some of the excited kids from the village.
Justin was so moved that he even took off his shoes and gave them to one of the local boys, according to reports.
The Canadian singer then took to his YouTube channel to share everything he had learned from his trip in an emotional confession.
"It was a place that I didn't really know existed," he said. "So many beautiful children who are very, very less fortunate. I'm not talking about poor. I'm talking about 10 people living in a little shack. And it was just a wake-up call for me."
"Any problem that I have, it's nothing. It's nothing at all. These kids have absolutely nothing -- no food, no water, no education. Yet we're stressing over the little things and they're so happy. They're just so happy."
Watch Justin's video below.