And it looks like some people weren't overly surprised to see that this darkest of conspiracy theories could actually be A Thing after seeing that Ronald Spence Jr. - otherwise known as 'Ronny J' - produced all the diss tracks released by both Slim Shady and MGK.
First we heard Em's song 'The Ringer', which made a subtle dig at MGK, saying: "So finger-bang, chicken wang, MGK, Igg' Azae' / Lil Pump, Lil Xan imitate Lil Wayne / I should aim at everybody in the game, pick a name."
It was only a name drop, yes, but then our attention was turned to another track on his surprise new album Kamikaze.
The track 'Not Alike' he ripped into Eminem's 28-year-old rival, saying: "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 commenting on my daughter Hailie."
Background: MGK angered Slim Shady way back in 2012 when he tweeted that his daughter was 'hot as fuck'. Whoops.
Anyway, MGK, real name Richard Baker (not as cool, is it?), hit back with 'Rap Devil' - a play on the veteran's old track 'Rap God'.
Pretty brave (or foolhardy? Maybe a little from column A, a little from column B...), especially considering that he once referred to Eminem as his 'idol'.
Well, we reckon his bridges are now well and truly burnt to the ground after he rapped about many things including Em's beard saying it was 'weird'. A rhyming genius, we tells ya!
Then came the real insult. It was a sharp dig, a swift blow and a really grown up one at that: "I'm sick of them sweatsuits and them corny hats."
OWCH. If that wasn't bad enough, he went on to say: "How could I even look up to you? You ain't as tall as me / 5'8" and I'm 6'4", seven punches hold your head still."
Then came the money shot: "You were named after a candy / I was named after a gangster (brr)."
This really is how adults settle their differences, isn't it?
But as we said - the plot has been well and truly thickened by the revelation that all these tracks were produced by Ronny J (in fact, he even gets a co-writing credit on 'Rap Devil') and it's led to people from far and wide declaring this is simply a promotional scheme cooked up by the pair.
Could it be? Is this little more than a way to boost their profiles (and album sales) via some form of Internet frenzy? Surely not...
Hmm, what a strange coincidence.
Someone else responded: "I fucking knew it. Fake beef to help promote MGK."
But others hit back saying: "This is literally the stupidest rap conspiracy theory Ive ever seen. If Em wanted to boost his album sales by starting beef it'd be with Kendrick or somebody who has some notoriety."
Another added: "Ronny J can produce for whoever he wants. You know that, right?
"Especially if rappers like Eminem are wanting to use his beats, of course he's going to take that offer! He has no obligation to produce to just one specific person in a rap beef."
They've kind of got a point but it's still a little weird, isn't it?
Featured Image Credit: PA