Dear ewein: since the new posters seem to be hanging back, I hope I may be forgiven for being first to reply;. I thought "doilies" meant the small pieces of linen, decorated with crocheting that used to be put on arm rests of upholstered chairs, but a peek at dictionary says they were also to protect furniture surfaces under vases, etc. I guess the 'dust' is just for alliteration. And it is constructed to avoid saying something profane. I confess that most of my expressions of annoyance are not as proper. So I can't match yours.