Not sure which forum to post this but this has had me rolling around on the floor all morning. It's one of the funniest things that I've read in a long time. However, I do believe the authors are being deadly serious (which just makes it funnier).
The blurb about the book:
http://www.hitlerwasabritishagent.com/
And extracts etc:
http://www.hitlerwasabritishagent.com/hwaba-intro.pdf
If you've got half an hour free please read the pdf - it's incredible (for all the wrong reasons). If only I had £30 spare at the moment.