EXAMPLES FROM THE WEB FOR OLD BAG
Let us see, old bag of bones; let us see what it is that you have under your arm!
The girl did not reply, twisting her hands on an old bag in her lap.
We'll make a sieve of holes of you, you old bag of treachery!
I then visited the garret, where my mother said I would find the old bag.
Put him outside, and let the old bag of bones go to the foreign devils.
And don't you knock under to that old bag of bones too much.
Some of these bullets have punctured the old bag aloft, as sure as you live.
There was an old bag which she remembered he said contained some of his mother's dresses.
Old bag of bones making curries for men who do not ask "Who cooked this?"
Trimmer obeyed his master, ignoring Mrs. Swinton, and lifted the old bag of bones with a jerk that seemed to rattle it.
c.1200, bagge, from Old Norse baggi or a similar Scandinavian source; not found in other Germanic languages, perhaps ultimately of Celtic origin. Disparaging slang for "woman" dates from 1924 (though various specialized senses of this are much older). Meaning "person's area of interest or expertise" is 1964, from Black English slang, from jazz sense of "category," probably via notion of putting something in a bag.
To be left holding the bag (and presumably nothing else), "cheated, swindled" is attested by 1793. Many figurative senses are from the notion of the game bag (late 15c.) into which the product of the hunt was placed; e.g. the verb meaning "to kill game" (1814) and its colloquial extension to "catch, seize, steal" (1818). To let the cat out of the bag "reveal the secret" is from 1760.