Yesterday I was lowering my handlebars a little - after returning to cycling a few months ago I reckoned I could manage that, so after doing the job leapt on the bike for a short test ride up and down the road. I won't do that again - I was in my comfy knitted fabric soft shorts and nowt underneath! Quite an interesting experience as the horn of the saddle try to resculpture my manhood!
Now when I road regularly in my teens and twenties I don't remember that being a problem - but those were the days (60s and 70s) of close fitting men's day-clothes and tight briefs that held a man in place. So the proper bike shorts will be compulsary from now on.
But what are biking underbriefs like? Can't be too comfortable if you spend a few hours off bike before coming home. There are some unpadded men's trunks cut like biking shorts that would not distort the fit of smart trousers. Are they better for the job that well cut brief offering close support?