-Machine Gun Kelly was on Hot 97's freestyle show and dissed G-Eazy by rapping, "Let's just keep it G, Only Eazy I fuck with is E, I seen he's dyed his hair and got a hanging earring"
-He also took shots at G-Eazy's relationship with Halsey: "I fucked his girl now he look like me"
-G-Eazy responded with an entire song about MGK called "Bad Boy." He raps, "Your shots just graze me, I'm standing, ain't put a hole in me, I answer to no one, nobody can get control of me, MGK please stop trolling me, get over me"
-G-Eazy also acknowledged MGK's mention of Halsey: "Him & I's on, mad you're listening to Halsey sing to me" and "Disrespect her again, I'll smack you"
-Eminem also took shots at MGK because of previous comments he's made about Eminem's daughter Hailie (she was 16 at the time and MGK was 21, he tweeted saying she was hot and then kept talking about being blacklisted by Eminem): "But next time you don't gotta use Tech N9ne, If you wanna come at me with a sub, Machine Gun, And I'm talkin' to you, but you already know who the fuck you are, Kelly, I don't use sublims and sure as fuck don't sneak-diss, But keep commentin' on my daughter Hailie"
Sources: 1, 2, and 3
@2:23 for the part about G-Eazy