The war of words between Nick Cannon and Eminem now has another volley.

Cannon’s diss track “The Invitation” was released Monday as a response to — deep breath — Eminem’s verse on Fat Joe‘s “Lord Above” that referenced Cannon’s September anecdote about wanting to confront Em over “The Warning,” itself a response to Cannon’s then-wife Mariah Carey‘s song “Obsessed,” a song about Eminem’s claims he had a relationship with Carey, 49.

Em, 47, responded to Cannon’s track Monday night on Twitter. “U mad bro?,” wrote the Detroit rapper, widely lauded as one of the most influential and talented MCs of all time. “Stop lying on my d-ck. I never even had a chauffeur, you bougie f*ck.”

This appears to reference a line by Cannon, 39, in his song: “I heard your chauffeur got a video of you suckin’ a c-ck / You paid him off, then laid him off, now who really the opp?”

Em added another bon mot within a half-hour: “I demand an apology Nicholas, you’ve made my gardener so jealous!”

Riveting stuff.