The two coaches had started with some back-and-forth banter on Twitter shortly before the live episode began.
I'm seriously amazed at @blakeshelton's stupidity…— Adam Levine (@adamlevine) April 28, 2014
.@adamlevine… I just found the craziest thing in my phone!!! Your PERSONAL cell phone number… hope I'm not stupid enough to tweet it out…— Blake Shelton (@blakeshelton) April 28, 2014
Ya'll! @adamlevine doesn't think I will actually tweet out his personal cell number… he's flirting with danger….— Blake Shelton (@blakeshelton) April 28, 2014
Shelton made good on his threat once the episode began and tweeted the information to his six million plus followers.
HEY EVERYONE!!! Here it is: (310) 493-7939 <-- @adamlevine's CELL NUMBER! Think I'm kidding? Try calling it!! Bitch!!!— Blake Shelton (@blakeshelton) April 29, 2014
"It was his number," The Voice host Carson Daly tells Today. "I knew it was real because Adam told me it was real, but I didn't know if they were going to go through with it or how it would play out."
"Those two, they have issues they've got to solve," coach Shakira says. "They've got to work out those issues among themselves. But Blake should expect some kind of revenge from Adam, I can assure you that."
"There's a really cool, playful banter that goes on between us as coaches," coach Usher adds. "Because we're real -- we really do care about one another and though this is a competition and everybody obviously wants to win, we're enjoying it while we're doing it."
Levine's phone number has since been disconnected. The Voice airs at 8 p.m. ET Mondays on NBC.