"Look at Bieber or whoever," the actor says of the egg launching, drag racing, 20-year-old pop star. "You're like, 'What the f**k, man? What are you doing? Why?' There's no one telling these people no, and it's a shame."
Jon blames Justin's parents and inner circle for not giving him some tough love. "[He should have] a mom or dad or a really good friend who can say, 'Hey, s**thead!" the 43-year-old explains.
The Biebs hasn't responded to Jon's comments just yet, but he's staying positive on social media. "I live for this music. Blessed to see the world and do what I love. Thank you," he Tweeted Monday.
It's not the first time Jon's dissed a major celebrity. He called Kim Kardashian and Paris Hilton "f**king idiots" back in 2012. Are you on Team Hamm or Team Biebs?