Miley Cyrus Throws Shade at Katy Perry and Her Serial Dating Ex John Mayer

Posted Thursday March 6, 2014 4:15 PM GMT

Oh boy, looks like there's another celebrity feud in the works. After Katy Perry publicly dissed Miley Cyrus and her scandalous tongue, the Bangerz babe fired back with her own insults.

It all started when Katy and Miley shared a kiss during the "Party in the USA" singer's tour. When Miley went in for the makeout session, Katy urgently pulled away.

During the brunette beauty's recent interview on an Australian morning show, she stated, "God knows where that tongue has been. We don't know! That tongue is so infamous!"

Miley wasn't taking Perry's words lightly and fired back on a Twitter with her own remarks. "Girl if ur worried abt where tongues have been good thing ur ex boo is ur EX BOO cause we ALL know where THAT been," the 21-year-old quipped, clearly referring to Katy's ex-beau John Mayer. John has a public record of dating stars including Miss Perry along with Jennifer Aniston, Taylor Swift and Jessica Simpson, just to name a few.

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