Advice ... MarkSo, when Mark Wahlberg blasted wayward teenager Justin Bieber on Tuesday you know that 'the Biebs' knew that the superstar actor was straight talking with him.
The 19-year-old has endured a summer of madness with various run-ins with both the police and photographers that culminated in him facing an assault charge for spitting on a DJ during a Cleveland nightclub brawl.
Tough guy: Mark Wahlberg has blasted Justin Bieber telling him to stop smoking weed and to pull his pants up - here the actor was in London on Tuesday
Summer troubles: Justin has run into all kinds of problems this summer - here he shows off his new tattoos during a concert in Brooklyn back in May
And all of these incidents have not been lost on the 42-year-old producer and actor who had been rumored to be lining-up Bieber to star in a future basketball movie alongside him.
The 2 Guns star - who got in trouble with the Boston police numerous times as a teen and who developed a drug addiction before turning his life around - has stepped up to the plate to put Bieber firmly in his place.
The Fighter star told the UK Sun newspaper:'Justin, are you listening?'
'Don’t be so naughty, yeah? Be a nice boy, pull your [pants] up, make your mom proud and stop smoking weed, you little bastard.'
Critical: Mark blasted Justin back in 2010 for not making a promised call to his daughter Ella Rae (Bottom right) - here they all attended an event at Paramount Studios in Los Angeles back in October 2010
But although he came down tough on the Canadian born star he still believes his current problems are not as bad as his were at the same age.
'He’s a teenager living in a different day and age,' Mark said.
'I was in prison before I got a record, and I don’t think he’s been to prison.'
However the former rapper also gave Bieber a veiled warning as his career appears in danger of spiraling out of control if he continues on his current path