There's a beef brewing in the R&B world, and Lyfe Jennings is at the center of the firestorm. Jennings went at Raheem DeVaughn on Twitter yesterday (Aug. 29) — and all because of a song.

Jennings, 40, borrowed from Kendrick Lamar on his new song "ABC's," calling out his own group of competition: Anthony Hamilton, Music Soulchild, Jaheim, Kem and DeVaughn.

Apparently, DeVaughn wasn't happy about the namecheck, and the whole thing spilled out on Twitter. Jennings took a bunch of not-so-subliminal shots, calling the self-appointed "Love King" a "soft a-- n---a," among others things. "This particular r&b artist dont wanna ride in the same car wit me cause hes in my r&b challange smh. Did I not say cats I respect??? #lame," he tweeted. 

DeVaughn even threatened to unleash his "shooters," Jennings wrote, which didn't pump much fear into the Ohio native. "Ok so Raheem Devaughn just told me he dont like me mentioning his name and he got shooters that love him..wtf does that mean lil n---a???," he tweeted. "My response was (excuse my french) 'f--k you and yo shooters soft a-- n---a.'"

There's still no Twitter response from DeVaughn, but the timing of the alleged disagreement is suspect since both artists have albums out within the next two months. DeVaughn's A Place Called Loveland drops Sept. 3 and Jennings' fifth studio album is slated for release Oct. 8.  

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(Photos from left: Michael Loccisano/Getty Images, Mike Windle/Getty Images for BET)