There's one rule: No girls allowed!
She shared in her Vanity Fair interview:
We know you can do it!
[Image via Vanity Fair.]
However, while we were busy wondering about their nonexistent baby, the country superstar was busy raising awareness for a VERY good cause!
But the bros weren't alone, as they were also joined by fellow judge Adam Levine, who just happened to be hanging out in the area after Blake nominated him to also take the challenge!
Not only do you get to watch all of these guy get nice and wet for our viewing pleasure, but it's also for an incredible cause! Everybody wins!
Ch-ch-check out the hilarious clip (below)!