If you're a rap fan, there's no way you're not familiar with Metro Boomin's latest producer tag, "If Young Metro don't trust you they gon' shoot you," which has appeared both on Future and Drake's "Jumpman," and -- even more prominently -- on Kanye West's "Father Stretch My Hands Pt. 1". 

If you're a big enough Future fan, you'll know that the phrase was first uttered on Uncle Murda's "Right Now," which featured Future, but according to Metro, who discussed it with DJ Drama recently, the vocal he isolated didn't actually appear on the track.

"I’ve been using that as a tag in beats since about August," he said. "'Jumpman,' before the song was recorded, that beat already said that. We had did this one with Uncle Murda one time, and one of the lines that Future said in there was 'If Young Metro don’t trust you, I’m gonna shoot you.' When he said that it had a different tone, but I remember when we were in the studio he had another tone, which is the one that’s the tag that was just like muted. I just made sure to go back on the session and just get it and just go HAM with it.”

As far as how the tag ended up on Kanye's album, Metro said that Ye couldn't get enough of it in the studio.

"I had a sense that he liked it," he said, "because we were in the studio before, and you know the Kanye dance he does when he's doing his thing? he was just going crazy doing that and saying "Young Metro don't trust you..."

Watch the full interview below.