No one knows why Piers Morgan dislikes Madonna, but the talk show host has banned the music icon from his CNN show.

This is how it all went down. Tuesday night, Piers tweeted to Madge: “Welcome to Twitter. You’re still banned from my show. Love Piers X.”

Madonna’s manager, Guy Oseary, hit back and asked, “Really?” He also attached an invite by the producer of Piers’ UK show for Madonna to appear as a guest.

Piers of course had to have the last word. So he Tweeted: “Madonna has only been banned from my CNN show, not my UK show, which sent that invite. But I’m now banning her from that too.”

Madonna has no idea why Piers hates her so much, and per TMZ, “She doesn’t even know who he is.”

Piers had said in January 2011 that Madonna was banned from his show forever because she’s been “an irritant in my life for 20 years.”