Idle Speculation

Does anybody know where, exactly, the phrase 'buck naked' comes from? A buck is not any more or less naked than any other animal; if anything the antlers might actually make them less naked instead of more, depending on how you look at it. And if it's monetarily speaking, a buck is awfully cheap.

While I'm thinking of it, actually, why is a dollar a buck?

Personally, I'd rather be sawbuck naked. Or even C-note naked. I'd like to think I'm at least somewhat more valuable than a Wendy's Junior Cheeseburger....