"Fuck Marshall Mathers," MGK said as he opened his set, according to TMZ. "The real Slim Shady can't stand up," he later shouted, poking fun at the Detroit rapper's age.
He later posted a photo on Instagram wearing the cover art for Em's song "Killshot," with his middle finger up. "He missed," MGK wrote. In the sliding pictures that followed, he also included a screenshot of his original diss track at Eminem, "Rap Devil," still at the No. 1 spot on Apple Music's chart.
Machine Gun Kelly didn't hold back his feelings about the song when it came out, calling it trash and announcing he's prepping a new EP Binge. However, he may be harboring more bad blood than he's letting on, as his security team was accused of beating up an actor who called MGK a "pussy" for bringing up Eminem's daughter.