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Justin Bieber has emphatically declared himself Team KimYe in their ongoing feud with Taylor Swift. The collaborators (remember the "Runaway Love" remix?) FaceTimed last night, Bieber posted the photo on Instagram and sarcastically nodded to Swift in the process.

"Taylor swift what up," he wrote in the caption, causing #TaylorSwiftWhatUp to trend on Twitter on Tuesday morning. Will Swift respond to the mockery? Or will Bieber's ex, Selena Gomez, who's a founding member of Swift's #squad?

Kanye popped up Drake's OVO Fest last night, so the FaceTime could have happened right after that. Let's not forget, West couldn't stop dancing the last time he saw Bieber in concert!

Watch the episode of the Fuse original The Kanye Effect that focuses on his mastery of the media: