old as the hills

*old as the hills

very old; ancient. (*Also: as ~.) That's not a new joke; it's as old as the hills! Our family custom of eating black-eyed peas on New Year's Day is old as the hills.
See also: hill, old
References in classic literature ?
His family is as old as the hills, and infinitely more respectable.
It's all cracked at one end and as old as the hills.
The old-fashioned brass knocker on the low arched door, ornamented with carved garlands of fruit and flowers, twinkled like a star; the two stone steps descending to the door were as white as if they had been covered with fair linen; and all the angles and corners, and carvings and mouldings, and quaint little panes of glass, and quainter little windows, though as old as the hills, were as pure as any snow that ever fell upon the hills.
Suddenly the door opened, and a woman as old as the hills, who supported herself on crutches, came creeping out.
Old Barley might be as old as the hills, and might swear like a whole field of troopers, but there were redeeming youth and trust and hope enough in Chinks's Basin to fill it to overflowing.
An educated Woggle-Bug may be a new thing; but a Woggle-Bug education is as old as the hills, judging from the display you make of it.