Were butt plugs popularly known in the 1960's?

Yes, sex jokes are older than soldiery itself, but I wondered about that particular item. I was thinking of a Christmas Tree sculpture on display in France which was mocked as looking like a butt plug.

I have asked a friend, as I am no expert in that field, and his opinion is that no, he hasn't seen them on vintage porn movies or photos. Seems to be a modern invention. But he may be wrong, he has not seen every movie from the 60's.

It is always a friend or cousin experienced certain things .... I wonder why ...

you made me remember a song of a Italian band the "Elio e le storie tese" (Elio and the tense stories) they have their own song called "Mio Cuggino" (My cousin), maybe you speaking Spanish a little you can understand the song...

https://www.youtube.com/watch?v=AFW81wHXcbE

I asked namely because I felt I should do something for the Vietnam War.

The Spanish Inquisition used the Judas cradle in the 15th century:
https://www.ranker.com/list/torture-and-execution-spanish-inquisition/katia-kleyman