why “as a clam”. I wonder? why, for that matter, as a sandboy (what’s a sandboy anyway?). I can see a rationale (not a very sound one, mind) for “happy as a king”; “happy as a pig in shit” is based on a popular, though misguided ........
.....at this point in my posting I cried out theatrically: “Stop! what are you doing?! Has wordorigins.org taught you nothing in all these months?” --- and then I set out to use some of the knowledge and skills I’ve acquired (only to a pitifully elementary level, I’m afraid) at this site, and the information came pouring out of the world wide web as though it would never stop. (573000 Google hits for “happy as a......”!) I found out, for instance, that “happy as a clam” makes less sense than a longer form commonly in use in the 19th century, “happy as a clam at high water”. I found out what a sandboy is/was, and why he’d be likely to be happy only when inebriated (Aside: did Neil Armstrong really go on to say that about being “as happy as a dog with two dicks” after his small step/great step shtick?). There’s no end to the stuff. Of course there’s a monstrous amount of rubbish too, but that’s characteristic of human intellectual activity at all levels --- we’re as susceptible to rubbish as dung beetles ---, and sorting through it helps to sharpen one’s critical faculties.
So thank you, friends (I feel proud to call you so), and thank you first of all, Dave, for helping an old man to expand his horizons. I owe all of you a great deal.