We have a really good local theater group that puts on cutting edge performances, unlike the usual "Brigadoon" fare of the normal theaters.
About 20 years ago they put on a performance of Hair. At one point during a song, two of the females on stage, who are obviously not wearing anything under their T shirts, step to the front of the stage and start to pull up their shirts.
"Is this the part of the play where we all get naked?" said one.
"Are you kidding me, we are in Columbia, SC," the other replied.
With that, they both looked very disappointed, as did the audience, and the song proceeded with everyone clothed.

More surprising to me than the nudity however, is the completely routine inclusion in the cast of a minor character who is a young gay man, or homosexual as would have been the term then. Even among the hippies and liberal elements that loved the show's content and philosophy, being gay was still not considered mainstream.