Vin Diesel might have bags of swag on the big screen, but he's lost several points on the coolometre after posting a bizarre video of him lip syncing and 'dancing' to Katy Perry and Beyoncé online.
In the clip, 'The Fast And The Furious' star can be seen miming along to Katy Perry's 'Dark Horse', which is bad enough in itself, except he doesn't even seem to know half the words.
But that's nothing compared to the (ahem) 'moves' he busts out to Beyoncé and Jay Z's 'Drunk In Love', which include crotch grabbing (because he's like, soooo urb) and errrm, pretending to be surfing.
Oh well, at least he took time out in the middle of the clip to explain what the hell had got into him.
"Guys, I’m just excited and happy," he said. "Universal just called me and told me that Riddick is number one on the DVD charts."
Maybe crack open the bubbles next time?
Watch the full video above