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As Progressives progressively gain control of popular culture, popular culture progressively gets more sloppy and more obscene. That's the way they seem to like it, and there's no point in debating whether the situation is an improvement or decay.
But the couched obscenity of old-style mid-20th Century America had a wit and grace of its own, so much that most people don't even notice the obscenity (let alone noticing the wit and beauty).
Let's review some "perfectly innocent and innocuous" phrases of days long ago:
Pulled a boner
Squirt (as in, "He's a little...")
In the pink
In the groove
Happy as a clam (that's pretty happy!)
Dirty expressions? Well yeah, they are, but nobody thinks about it.