The song "Quitter (Everlast Diss)" by Eminem (featuring D12) is a diss track aimed at Everlast, a rapper who dissed Eminem first. Eminem starts by addressing Everlast's jealousy of him, claiming that he upsets him by getting more respect and being liked more by his niece and nephew. Eminem also accuses Everlast of trying to do country-western rap records after his own music fell out of favor, calling him a "quitter" for giving up on his original sound.

The chorus repeats the insults and threatens violence if Everlast talks about Eminem's daughter again. In verse two, Eminem mocks Everlast's music and takes credit for his heart problems, suggesting that he's caused a "bad heart condition" for him.

In part two of the song, Eminem continues his insults, calling Everlast a "fat boy" and questioning his claim to be a Muslim. He accuses Everlast of copying Kid Rock and Limp Bizkit and trying to fit in with rappers like Eminem to improve his acceptance in the hip-hop scene.

Other members of D12 also participate in the diss track, with each member delivering their own insults and threats of violence. The song ends with Eminem promising to quit after his final insult, saying he only believes in "kickin' a man while he's down." The overall meaning of the song is to defend himself and attack his rival, Everlast, in a brutal way.