Eminem shared a list of words that shouldn't be rhymed with one another for any would-be rappers out there. You can see his dos and don'ts here:
The 48-year-old makes off-the-cuff flowing raps look effortless, and if you fancy having a go yourself he's given a quick rundown of what words you should avoid rhyming and shared a list of the cliched rhymes rappers often use when put on the spot.
Eminem - real name Marshall Mathers - shared the livestream back in 2018 alongside fellow stars of the hip-hop world dEnAuN, Royce Da 5'9" and The Alchemist who all looked to find the whole thing pretty funny and surely ruffled a few feathers along the way.
But let's be honest, it's not like Eminem is a stranger to stirring up a bit of controversy, is it?
The foursome took a swipe at some of the lazy lines that rappers pull out when they're trying to think quickly on their feet during a rap battle.
You cannot, for example, be 'a pimp walking with a limp', he explains before launching into a series of instructions against similarly easy, overused rhymes.
The four of them then rattle off a list of easy, overused rhymes to show exactly what not to do by doing those very things.
For example, Eminem declared that: "If you have an emergency, it cannot be with an urgency.
"And if it is with an urgency and you are rushed to emergency surgery, you cannot be burned in third degree."
He continued: "And if you're gonna murder me, it cannot be like you never heard of me. You have to know me."
Tongues get wedged even firmly in cheeks as the video progresses, with the group of rappers dissing mobsters that eat lobster, dropping bombs on Vietnam (which sounds a lot better in an American accent, to be honest) and how you're no longer allowed to die hard like Bruce Willis.
There's a whole slew of advice on what not to do.
Other banned rhyming couplets include using skills to pay bills, getting knowledge from college and telling truth in the booth - especially if you're addressing the youth.
And don't you dare swagger like Mick Jagger.
They didn't mention anything about rhyming masturbation and PlayStation, though, so you better believe we're going to keep that one up our sleeve. Ahem.