Royce Da 5'9" has always been nice with the bars and his new joint, "Dead President Heads," is a six-and-a-half minute lyrical exercise. With no hook, Royce goes in and addresses beefs that go back as far as 1999.

Before the turn of the century, Eminem shouted out New Jersey-based group the Outsidaz on his groundbreaking The Slim Shady LP, but Em's friend and frequent collaborator Royce did not have the same relationship with the Jersey crew, as he reveals on "Dead President Heads."

"[In] '99 the Outsidaz told me I wouldn't last/I'm too arrogant/But here I am, two boys, two girls, two errors in/And they over there on pills and heroin," he raps.

Hearing that their name had been brought up, members of the Outsidaz took to social media to respond to the Bad Meets Evil rapper.

"The funny thing is I think the song is dope but I'm very offended," founding member Pacewon wrote on Facebook. "I considered him a friend and after 17 years, songs together, seeing each other out and about and all. He disses us? Not cool. Not cool at fuckin' all! We should be getting together, not going at each other but whatever! Once again ‪#‎HipHopHistory‬ has been made.

"One of my G's messaged me!" Pace continued. "'Lol fuck em he think better than every one now cause he sober and found God if he wasn't part of Slaughterhouse, three quarters of these people wouldn't know who the fuck he was anyway'"

Pace and Royce also went back and forth on Twitter with the Outsidaz member saying, "You can't possibly think that you as entertaining on the mic as we are," to which Royce responded, "I still love you Pace Won...Y'all started it tho [sic]."

Pacewon went on to declare war on the Detroit native and said he's bringing his Outsidaz comrades with him. "By the way, I spoke with Young Zee and D.U. yesterday! It's on bitch!" he tweeted. "Royce Da 5'9" vs. The Outsidaz! Let's go! I declare war!"

Fellow Outsidaz member Denz was a little more aggressive, posting a photoshopped picture of Royce and Eminem with a scathing caption. "So this fag ass insecure ass creep," he wrote. "JOYCE the 5'9 thought it would be a good idea to sneak diss us?! Coward ass nigga was a fan when we met him. He's been harboring some ill feelings towards us for 17 years!!! And we didn't even know . What kinda shit is that? He talking about some shit from 1999? Em came and saved this homo now if you think it's a good idea to come at us cause he think niggas is in active."

Royce didn't just have it in for the Outsidaz, either. The Detroit MC also called out more contemporary artists. First he responded to Tyler, The Creator's claim that Eminem's ShadyXV album was "ass." Then the PRhyme rapper went at people who dissed Em only to jack his flows later.

"Niggas dissed Marshall after they copy his whole reference/Like we won't send an actual firing squad to their studio/That will Basquiat their whole session," he rapped.

Royce is not playing games this time around. Hopefully this will spark a slew of good records. Read our interview with Royce where he talks about his upcoming EP, albums and more.

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