[HIDEK6]

This word has been used in slang since at least the 80’s.

I first became aware of this usage in the 1950s. And I suspect it was not new even then.

[Fiji Hill]

They act as if “like” is a recent phenomenon.

I recall an issue of MAD Magazine from 1960 that made fun of this expression. If I remember correctly, a sign in a library cautioning patrons to keep their voices down read: "Like, Quiet!"