Some of Justin Bieber's recent—um, troublesome—behavior is not sitting well with Zach Galifianakis.
So, when the 19-year-old pop star dropped by the funnyman's Between Two Ferns show on Funny or Die, he got a stern talking to—and a spanking!
"It's really exciting to talk to you, especially right in the middle of your public meltdown," deadpanned the Hangover star.
And when the Biebs refused to take the bait, Zach turned on the mock seriousness. "Your young punk attitude is not gonna work in this interview," he said. "You understand me, son?"