Hollywood actor Mark Wahlberg has blasted wayward teenager Justin Bieber for his string of headline-grabbing antics.
The former badboy, whose teen years were filled with run-ins with police and spells in jail, gave Bieber some stern words of wisdom during a recent interview with The Sun newspaper.
"Justin, are you listening? Don't be so naughty," Wahlberg said. "Be a nice boy, pull your trousers up, make your mom proud and stop smoking weed, you little bastard."
Bieber, 19, has provoked controversy in recent months with various clashes with both the police and photographers and allegedly disrespecting his fans. Past incidents included publicly urinating while cursing a former president, allegedly spitting in a person's face and getting caught with drugs on his tour bus at the Canadian border.
Despite the backlash, Wahlberg is confident his young friend is nowhere near as bad as he was at the Baby hitmaker's age.
"He's a teenager living in a different day and age. I was in prison before I got a record out and I don't think he's been to prison," added Wahlberg,
"This career can be short-lived," he said. "You might as well be the best you can be while you're doing it."
Meanwhile Wahlberg is expected to team up with the teen heartthrob on a film in the near future.
"Justin and I were talking about doing a movie, which could still happen," he said.
"We have a great script that could be a vehicle for him to make his debut in movies, then maybe we could do something for the soundtrack."