Facepalm

I've heard it comes from WW2, there was big push of segrating women and men to push the ideal "if you're a man you'll fight for your country to protect your girl/mum back home". (Yes even though many of them were just kids).

Hence why many came home with severe trauma clinging onto the ideal of "Im a guy, I must do this" and being pushed to "show no emotion and no other guy is allowed to" training from the military that got passed onto their male children.

Leading to the 90s to view LGBT quite negatively particularly in some media in things people would say.