Justin Bieber, Jon Hamm

Jon Hamm thinks someone needs to smack some sense into Justin Bieber.

In an interview with Men's Fitness, the Mad Men star doesn't hold back on criticizing the 20-year-old singer and other privileged members of his generation.

Justin Bieber: A timeline of bad behavior

"Look at Bieber or whoever," Hamm says of the pop star. "You're like, 'What the f---, man? What are you doing? Why?' There's no one telling those people no, and it's a shame."

Hamm's suggestion? "A mom or a dad or a really good friend who can say, 'Hey, sh--head!'"

Hamm ended his "Get off my lawn" comments by noting: " Life skills are something we're missing... just sh-- you needed to learn in life. There used to be a class that kids had to take in high school called home economics, which was cooking and sewing and just sh-- you needed to learn in life."

Bieber has not responded publicly to Hamm's comments. What do you think of his remarks?