Oh, snap. John Mayer may or may not be seeing Katy Perry again, but one thing's for certain: He and Taylor Swift are never, ever, ever getting back together. Not that he had much say in the matter.
During his guest hosting duties on CBS' The Late Late Show last night, the rocker made reference to his famous ex in his opening monologue. "You'll see me at the Grammys doing what I do best
— being avoided by Taylor Swift," Mayer cracked. The crowd responded with an ooh-he-went-there gasp/laugh (lasp?).