if something is as old as the hills, it has existed for a very long time.
Difficult relationships between parents and children are nothing new: the problem's as old as the hills.
(redirected from be as old as the hills)
be (as) old as the hills
To be very old. Usually used humorously. Oh, she's old as the hills, she can't hear us.Why don't we ever sing new songs? Those hymns are as old as the hills.