an old wives' tale

Meaning

1. an old idea or belief that has been proved not to be scientific

In the movies · 1

• Isn't this where you tell me some type of old fable or wives' tale- All right, all right, I got one.Law Abiding Citizen2009

From the same entry

• any old how
• any old
• as old as the hills
• for old times' sake
• the good old days
• of old
• old boy, chap, man
• old enough to be father
• old enough to know better
• an old head on young shoulders
• the old story
• one of the old school