A spanking, a sliming, the pee-bucket incident — nothing was off limits when Justin Bieber sat down with Zach Galifianakis for the latest edition of Between Two Ferns With Zach Galifianakis. The pair's back-and-forth was hilariously awkward right from the start, with Zach admitting that he was a little nervous because he's "never interviewed a 7-year-old before." For his part, Justin was a good sport, playing along and joking that sometimes, in the middle of concerts, he wishes he was just at home watching Cops. He even kept a straight face when Zach started taking digs, saying, "It's really exciting to talk to you, especially right in the middle of your public meltdown." Watch their funny interview above.