Oh for heaven's sake. It is not acceptable to ask strangers to display their bodies, no matter how rarely you get out. If you want to see somebody with their clothes off, go to a fucking strip club. Stop making excuses for this bullshit behavior. If you can't understand this, visit a therapist who can help you to navigate social situations.
It's sexist whenever you have a big disparity that people exploit as an excuse for sexual harassment, whether a small number of women in a crowd of men or a small number of men in a big crowd of women. I purposely omitted any mention of gender in the grandparent comment.