Daniel Cormier and Brock Lesnar's altercation at UFC 226 has the sporting world abuzz with excitement right now.
We all know what happened - moments after DC became the heavyweight champion by knocking out Stipe Miocic, he invited The Beast into the Octagon.
Lesnar, who was watching the bout cageside, did just that.
Now, their exchange wasn't exactly the sort we see every day in UFC. In fact, it was more like a WWE style segment.
Cormier and Brock swapped insults and did a bit of trash-talking, but things didn't get too physical.
There was just a bit of shoving before Lesnar was escorted away - and although things seemed pretty calm, the new heavyweight champ didn't take too kindly to that.
'HE'LL PAY FOR THAT'
Of course, it was DC's idea for Brock to step into the cage - he was invited in. But still, the fact that WWE's Universal title holder put his hands on Cormier is a little disrespectful.
So much so, in fact, that the UFC star fired his future opponent a pretty blunt warning in response.
Speaking to WWE's Cathy Kelly on the red carpet at the 2018 ESPY's, Cormier explained how he reacted in that moment.
"He pushed me. And I told Brock in the Octagon, I said 'listen Brock, you get this one. But when they close that Octagon door I’m going to put you to sleep' He’ll pay for it."
Check out his full interview below.
That's a very confident prediction from DC, but only time will tell if he'll actually be able to follow through and beat Lesnar in the Octagon.
The heavyweight super fight is expected to happen as early as possible in 2019.
It can't happen this year - as there are a couple of things holding back Brock's UFC return.
He is still under contract with WWE this summer - although is expected to leave the company pretty soon after SummerSlam in August.
Even after he does that, The Beast will still have to serve the remainder of his UFC suspension - and after re-entering the USADA testing pool earlier this month - that will expire in January.
For now though, we'll have to make do with the trash talk - and expect there to be a lot more back and forth before the pair eventually get into the cage.