Weird Miley-Sinead Feud May Never End Singers go back and forth on Twitter, Facebook By Evann Gastaldo, Newser Staff Posted Oct 4, 2013 10:58 AM CDT 21 comments Comments In this Sept. 21, 2013 file photo, Miley Cyrus performs at IHeartRadio Music Village in Las Vegas, Nev. (Photo by Al Powers/Powers Imagery/Invision /AP, File) (Newser) – Miley Cyrus obviously couldn't let it go when Sinead O'Connor called her out in an open letter, so everyone's favorite twerker responded on Twitter yesterday, AFP reports. She started by comparing O'Connor to famously troubled Amanda Bynes, tweeting, "Before Amanda Bynes.... There was...." along with a screenshot of this series of disturbing tweets O'Connor posted last year. She followed that up with a picture of O'Connor famously tearing up a picture of the pope. Apparently that was not enough to scare O'Connor off; she responded yesterday with, yes, another open letter posted on Facebook, in which she warned Miley, "Taking me on is even more f-----' stupid than behaving like a prostitute and calling it feminism." O'Connor took issue with Cyrus mocking people who've suffered mental health issues, then predicted Cyrus herself will "one day suffer such an illness, that is without doubt." In a second post, she said her lawyers would be contacting Miley's lawyers. Miley, not dissuaded in the least, responded by tweeting, "Sinead. I don't have time to write you an open letter cause Im hosting & performing on SNL this week." And that led, of course, to a third letter from Sinead, posted today: "You can take five minutes today between g- string f-----' changes to publicly apologise and remove your abusive tweets." We're guessing you'll be out of luck there, Sinead.