Miley Cyrus did not like Katy Perry's explanation why she pulled away from their kiss at a recent concert.

As we reported yesterday, Perry was in Australia when she was asked about the infamous lip-lock between her and Cyrus in the middle of one of Miley's Bangerz concerts. Perry said of the kiss, "I just walked up to her to give her like a friendly girly kiss, you know, as girls do. Then she, like, tried to move her head and go deeper and I pulled away.

"God knows where that tongue has been. We don't know! That tongue is so infamous!"

Cyrus took to Twitter today to hit back at Katy's comments. She posted a photo of Perry from the interview and wrote, "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."

Perry's ex, of course, is John Mayer - who has previously dated Jennifer Aniston and Jessica Simpson, and infamously detailed his sexual exploits with the two stars in a Playboy interview.

Cyrus then posted, "Dontchyouuuu act like you didn't lurvvvvv it," with a drawing of their kiss. Katy Perry hasn't publically responded to the comments.