Mirko "Cro Cop" Filipovic and former opponent-turned-training partner Pat Barry appear to be enjoying their time together.
A 65-second video made its way to YouTube today, and it happens to feature "Cro Cop" and Barry singing The Mamas & The Papas' hit song, "California Dreaming."
"Cro Cop" faces Roy Nelson at UFC 137 next Saturday live on pay-per-view from Mandalay Bay Events Center in Las Vegas.
But until it's time to see the heavyweight legend step foot inside the Octagon, enjoy this hilarious duet.
For additional information on UFC 137, follow Joshua Carey on Twitter.