Update: Boing Boing pal Seth Godin writes,
Apparently, it comes from this book which is in itself quite an amusing read, as far as the reviews indicate...
Boing Boing editor/partner and tech culture journalist Xeni Jardin hosts and produces Boing Boing's in-flight TV channel on Virgin America airlines (#10 on the dial), and writes about living with breast cancer. Diagnosed in 2011. @xeni on Twitter. email: firstname.lastname@example.org.