Secretive (eg my wife doesn't know I'm writing this blog)
Mendacious (eg my name isn't really Ben Trovato - that comes from an Italian saying: Se non è vero, è molto ben trovato - if it's not true, it's well found (or made up, as we'd say.))
Superficial (I have an interest in almost everything, and can pass myself off as knowing a lot more than I do...)
Self-deluding (my wife probably does know about this blog by now...)
For the record, my kids aren't really called Antonia, Bernadette, Charlie and Dominique either... It would seem unfair to write about them under their true names, so ABCD seemed a good idea. My wife's not Anna either, but again the AB pattern seemed pleasing.