MGK inadvertently started the beef 6 years ago when he called Eminem's then 16 year old daughter, Hailie, "hot as eff."

Eminem is precious about his daughter, so when MGK claimed that Eminem was standing in the way of his career, in "Not Alike," Eminem called out MGK as a "c-cks-cker" for "sneak-dissing" him and "commenting on my daughter."

That's when MGK made "Rap Devil."

And now Eminem imagines the MGK is Stan in "Killshot," and he burns MGK bad:

Listen to this shit. Eminem rocks! "I'd rather be 80 year old me than 20 year old you!" LOL.