Miley Cyrus fires back at Katy Perry over kissing comment :takes a swipe at her ex

A few days back, Katy Perry appeared on an Australian TV show and when asked about her  kiss with Miley,she shaded her by saying

'I just walked up to her to give her like a friendly girly kiss, you know, as girls do, and then she like tried to move her head and go deeper and I pulled away.God knows where that tongue has been.''That tongue is so infamous!

Miley obviously hurt by it tweeted and made reference to Katy's ex John Mayer..Katy dumped him last week

Girl if ur worried abt where tongues have been good thing ur ex boo is ur EX BOO cause we ALL know where THAT's been

 Oops! That's deep