Songfacts®:

• The lyrics were written by Thom Yorke, who was on a train filled with obnoxious drunk rich boys, which is shown in the line, "City boys in first class... someone else is gonna come and clean it up."
• The line "Flan in the face" is a reference to Clare Short, the UK overseas aid/development secretary who was once assaulted with a custard pie by anti-globalization activists and who later resigned Tony Blair's cabinet over the Iraq War.
• The "Wolf" title and reference to Three Little Pigs has been seen as one of many fairy tale metaphors on the album, inspired by Yorke's status as a new father. Apparently, Yorke felt the lyrics were too bleak to use, until guitarist Jonny Greenwood came up with the jaunty, angular backing music. >>

  Suggestion credit:
  gabriel - London, England, for all above