They have been known to try and one-up each other on and off set of their hit TV show "The Voice". While some people aren't sure if they are joking around with each other or are just plain mean to one another, we know they really do love each other and that the bromance is real.
The two Voice coaches began somewhat of a Twitter war, when Levine posted a hilarious video of Shelton singing in the car! Shelton was in the driver's seat, singing his scales extremely loudly, not even noticing that Levine was filming!!
A few hours later, Shelton fired back with a similar video of Levine and the caption, "Very funny @adamlevine, very funny. Guess who had their own hidden camera..."
While the Twitter war is more like funny banter between friends, we can't help but think that they are just trying to embarrass one another.
Clearly these videos don't humiliate them too much.