Forever, there was a file included in stock Emacs, `spook.el`, which could be hooked up to automatically add random strings of "interesting" keywords to each of

Forever, there was a file included in stock Emacs, `spook.el`, which could be hooked up to automatically add random strings of "interesting" keywords to each of your email or Usenet messages (in signatures, or in headers like `X-Spook`). https://www.gnu.org/software/emacs/manual/html_node/emacs/Mail-Amusements.html https://www.gnu.org/software/emacs/manual/html_node/emacs/Ma... Looks like copyright date of 1988: https://github.com/emacs-mirror/emacs/blob/master/lisp/play/spook.el https://github.com/emacs-mirror/emacs/blob/master/lisp/play/... https://github.com/emacs-mirror/emacs/blob/master/etc/spook.lines https://github.com/emacs-mirror/emacs/blob/master/etc/spook.... Try `M-x spook RET` in an Emacs buffer.