It’s kinda interesting to use an expression from the past before a young person. At first, they may be baffled, then amused, and actually go on to incorporate the expression into their own usage, even if only briefly. It reminds me of when I first heard the more modern expression of, “do me a solid.” Language is fascinating, for it evolves and lives, never really dying, but just going through different incarnations and twists, some of which wind up in kind of a linguistic file folder… 
