unearths some literary gems.
From A Dictionary of Catch Phrases, ed. by Partridge et al.:
[We knew about people disguised as Christmas trees; but did we know that "all dressed up like a Christmas tree" was an alternative to "all dressed up like a dog's dinner"?][And how about this, for a nifty trick: an index that (seems like it almost) makes room for itself! From the preface...]When I had compiled the index to keywords, I found that it threw up quite a noticeable amount of previously unremarked duplication which I was then able to remove: it would be unfair to say that the index thus almost made room for itself--but it sometimes seemed like it.