"I have always loved you. Now I must whore my past."
He's performed with a different top every night, featuring one letter painted on the front and another on the back.
A group of fans, running a Facebook group called Paul's Shirt have collectively worked out the letters form two 19-character sentences. They predict that the message reads: "I have always loved you. Now I must whore my past."
Billboard speculates that the message could be Westerberg's attempt to let fans know he's not happy with the band's current incarnation. They reformed in 2012 after 20 years and Westerberg and original bassist Tommy Stinson are joined by drummer Josh Freese and guitarist Dave Minehan.