***Went to a 3D XXX flick in the late 60s.***
There was a skin flick released back around 1970 called THE STEWARDESES. My brother-in-law went to see it and said it wasn’t much. The local movie critics panned it and said you could see just as well without the glasses.
I never saw it but the advertisements were everywhere.
That was the one! We got to the theater after the movie started and one of the guys put on his glasses so quickly he broke/ripped them. When he went to get another pair the woman at the counter told him to cool down a bit. LOL. That was about the only thing I remember about the evening.