"You're So Vain."
I'll bet no one had David Geffen in the "You're So Vain" office pool.
According to an interpretation of a clip of a remastered version of "You're So Vain," Carly Simon named David Geffen as the target of the song.
When the song is played backwards, at least as heard in the clip, a voice whispers "David."
Geffen was the head of Simon's record label at the time, and was supposedly paying more attention to Joni Mitchell.
That would mean the song is not about exes Cat Stevens, James Taylor, Warren Beatty, Mick Jagger or Kris Kristofferson.