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Bruno Mars Totally Effs Up Cameron Diaz’s 'SNL' Promos: Watch

Mark Ronson, too.

Cameron Diaz will host "Saturday Night Live" this weekend, and the gig should be a breeze for the actress. (It is her fourth time hosting "SNL," after all.) That is, if musical guests Mark Ronson and Bruno Mars can get it together oh my Goooooooood.

Related: 9 Times Mark Ronson And Bruno Mars' Whole Squad Looked Fresh To Death

Mark and Bruno manage to make their way through the first of their two new "SNL" promos with Cameron without a problem, freeze-frame riff and all. In the second, though, the "Uptown Funk" collaborators totally blank on camera. I mean, at least they didn't throw an impromptu hoedown to stall for time, but still.

I was rooting for you. We were all rooting for you.