It’s cool daddy-o.
Have you heard the expression? If you have, when?
If you haven’t, it says something about you. Maybe your age and where you were born.
He had heard it, and really had a subtle influence on the lingo as the 50s and 60s as they progressed.
As the host of the television after-school dance program “American Bandstand” he made an ideal surrogate chaperone: a wholesome, polite, honorary adolescent. Although he was 27 when the program was first broadcast nationally on Aug. 5, 1957, he could have passed for 17. At the time he seemed the sort of mild-mannered superannuated boy who might once have served on the school safety patrol and been elected class treasurer. In fact he had been the president of his high school student council in Mount Vernon, N.Y. [Wikipedia]