I was reading a book on social life of the upper-middle class and new rich of the American 1920s and realized so many things we now do proudly were considered socially taboo back then. This was especially the case for clothing, makeup, women in certain public spaces, etc. What do you think will be different in the 2120s? Or maybe even the next 50 years?
Honestly this can be taboo regardless of your gender
I’ve seen shirtless dudes doing sports outside (e.g. basketball or jogging - though these activities may be uncomfortable for ladies with big tatas, but that’s another matter.)
Or shirtless dudes in public parks enjoying a barbecue day.
I do concede that these are very specific circumstances, though.