When John St. Germain pulled over the bus, the boy assured him, "I know what I'm doing."
A couple who spotted an out-of-control bus were stunned to discover a 12-year-old boy behind the wheel.
The child, who has not been named, is believed to have stolen the bus from a depot in Bangor, Maine before taking it on a joyride on Thursday.
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John St. Germain told INSIDE EDITION that he was inside a car with his colleague when they saw the bus driving erratically. When the driver started smashing into signs, the couple called police and started recording.
“It was quite shocking,” St. Germain told IE. “I was nervous and scared at the same time.”
But the couple was even more shocked when they realized who was driving. “It’s a f***ing kid!” he's heard saying in the video.
After arguing over what to do, the couple beeped their horn and the youngster eventually pulled over. St. Germain then boarded the bus.
“I stood there for a minute. He didn’t even notice me,” he told IE. “Then he said, ‘I know what I am doing.'"
But St. Germain grabbed the wheel and put his foot on the brake. Much to St. Germain’s shock, the boy casually sauntered down the road “like nothing happened,” he said.
He followed the boy until the police caught up with them. The child was charged with unauthorized use of a motor vehicle and driving without a license.
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It turns out that St. Germain doesn’t have a license either – and he feared that he’d be in trouble for driving the bus. But the police thanked him before giving him a Bangor Police Department Challenge coin for his help.
The department then shared the couple's video to Facebook, where is has been liked more than 5,000 times.
Watch: 11-Year-Old Arrested After Taking Cement Truck on a Joyride
