Hip hop duo, Rae Sremmurd pose for a portrait backstage at FADER FORT presented by Converse during SXSW on March 17, 2016 in
Roger Kisby/Getty Images Portrait

If you've been living under a rock, then you better wake up because Rae Sremmurd is taking over the country. The fiery rap duo's "Black Beatles" single from their Sremmlife 2 LP currently nabbed the No. 1 spot on the Billboard Hot 100, which was propelled by the viral #MannequinChallenge that OG Beatle Paul McCartney even took part.

Rae Sremmurd's Swae Lee spoke with Rolling Stone about the single's success as well as their reaction to Macca's epic challenge. "It just blew our minds! 'Cause when you've reached a real Beatle, it's the ultimate co-sign. It's like dang, respect," he said. "We reached a real Beatle and it's crazy."

It turns out Rae Sremmurd actually met McCartney way before "Black Beatles" (which they recorded just days before they turned in the album) was even a thought, proving their stars were aligned from the start. Lee tells RS:

"The first time we went to Coachella with Mike Will, before we blew up, we met Paul McCartney, and he gave us some uplifting words of wisdom. We were humbled. It was a rock star moment to have this dude telling us that. He didn't even know us, but he was just talking to us. I guess it was our aura or I don't know what it was. He just took the time to speak with us before we even made the song."

Swae Lee also reveals The Beatles are one of his and his brother's music inspirations, and their favorite Mannequin Challenges (aside from Paul) include LeBron James, Steph Curry and this awesome dog.

Click here for a roundup of the best Mannequin Challenges, while you listen to Nicki Minaj's "Black Beatles" remix of course. And below, throw it back to a year ago when Rae Sremmurd revealed their craziest house party to Fuse: