Yelawolf and Eminem have teamed up yet again, this time on Yelawolf’s newest single “Best Friend.”

The two rappers take on heavy topics such as the relationship between heaven and hell and the loss of close friends. Eminem spits brutally honest rhymes about himself and shouts out his late friend Proof.

“Talking to Proof dropping a deuce/ Fill up a syllable clip like a refillable strip, cock and I shoot/ Who you think’s my Glock that I use?/ That I pull from to get my strength up against these haters.”

The “Best Friend” collaboration is featured on Yelawolf’s upcoming album, Love Story, due April 21.