I'm as old as the hills, of course.
Andrew is much older, almost as old as the hills.
There can't be because speculation is as old as the hills.
His family is as old as the hills, and infinitely more respectable.
I'll never again feel as tall as the sky and as old as the hills and as strong as the sea.
Many of the customs and rituals of this tribe were as old as the hills they dwelt among.
It is an economic axiom as old as the hills that goods and services can be paid for only with goods and services(Albert Jay Nock)
Now that I'm as old as the hills, I have only my darling cuddly dogs to kiss, probably hundreds of times a week.