Trudeau's father was the prime minister of Canada at the time, Perry noted. "It's awful. I was a stupid kid I didn't want to beat him up", the actor said.
The actor knows that what he did was totally wrong: "I'm not bragging about this bad thing-I was a stupid kid". Mr Trudeau emphasised the benefits of Canada-US trade on jobs and the economy in an interview with NBC News.
"[The cast] worked to pull together such an extraordinary crowd to celebrate this story of friendship during extraordinarily hard times between individuals between countries", the prime minister said about "the close relationship between the United States and Canada".
Once that sinks in, here's another piece of information - Matthew Perry beat up Justin Trudeau in school.
His press secretary said on Thursday that "we embrace the opportunity to highlight how we are there for each other in times of need".
"I don't think there's a week goes by that we don't talk", Woodford said. It was awful. I was a stupid kid.
Matthew Perry shared a story that he said he's "not proud of" on Wednesday's Jimmy Kimmel Live. "I don't want to think about it".
Trudeau has yet to comment publicly on Perry's story.
The 47-year-old actor joked that it was this beat down that helped make Trudeau the world leader that he is today.
The Massachusetts-born actor, who described himself as "half" Canadian, said he feels shame over the bullying and doesn't like to think about it.
"It's unbelievable to see their faces, meeting the prime minister, shaking his hand, and having him say "thank you" ... for them to realize how extraordinary it is to all of us".