Make fun of Taylor Swift? Not on Lorde's watch

(CNN) — Everyone should know by now that Lorde and Taylor Swift are good friends — and if you mess with one, you're messing with them both. DJ/music producer Diplo learned that lesson the hard way on Wednesday, when Lorde stepped in to protect Swift 

on her new album, 1989. Swift and Perry have a common ex-boyfriend: John Mayer. Celebrities have too much time on their hands. On Wednesday, musician Diplo — who is now dating Perry, a sworn enemy of Swift — tweeted a comment about Swift's butt.

Lorde defends Taylor Swift against Katy Perry's boyfriend, Diplo.

What do Taylor Swift and producer/musician Diplo have in common? Well, Taylor Swift dated John Mayer. Katy Perry also dated John Mayer. Katy Perry is now dating Diplo. Taylor Swift has made it known (see: album '1989' 

Word to the wise: Don't mess with T. Swift, unless you want Lorde to totally burn you on Twitter. Diplo found that out the hard way after he dissed Taylor Swift on Twitter Wednesday, writing that "someone should make a kickstarter to get Taylor Swift a