'The Voice' coach Adam Levine was a couch guest on 'Jimmy Kimmel Live!' last night and during his cuss-filled chat with Kimmel, Levine showed off his hilarious sense of humor. He hopped on his seat and sat Indian-style the entire time. He recounted spending the weekend with Justin Bieber and MC Hammer in what could be considered a musical apocalypse. Levine revealed that he ended up hanging with the duo as he is friends with Bieb's manager, Scooter Braun.

Levine also spoke about the time he ended up playing basketball with the Biebs in Australia. It was a good-natured game ... Until he felt "this intense shove in my back," Levine recalled. "The ball was dead. He pushed me hard in the back and I thought, 'Did Justin Bieber just punk me and push me in the back?' My natural instinct was to whip the ball at him as fast as I could. Everything was fine after that. I felt bad, since I struck a child." Kimmel said not only did Levine "strike a child" but that he struck a "national treasure."

Levine's awareness ad for testicular cancer -- where he posed naked except for a pair of strategically placed female hands -- was also shown to the audience and discussed. Levine explained that it was like the infamous Janet Jackson Rolling Stone cover, but reverse, with the hands on his "situation."

Levine did speak about tonight's episode of 'The Voice,' where his team will be cut in half when America's votes save one of his team members and then he is forced to save the other. "It's super stressful, I don't want to have to do that," Levine admitted. "It is tough. These kids are working so hard. It's hard to say,' You have to go now. Bye.'"

We do not want to be in Adam Levine's shoes tonight. 'The Voice' airs at 9PM ET on NBC.

Watch Adam Levine Talk About Justin Bieber on 'Jimmy Kimmel Live!'

Watch Adam Levine Talk About Naked Ad and 'The Voice' on 'Jimmy Kimmel Live!'