It goes back to the invention of the saying, "When in Rome, do as the Romans do."
Following the social more's of the area you are in to best you can just shows you have at least the minimum of common sense and respect for the culture in which you are immersed for the locals who have you out numbered a million to one, to allow you to live.
Acting like an ignorant stupid disrespectful yahoo may be a compliment to the chef with out the slightest change other than company and geography. There's a million examples only the most ignorant and arrogant of fools thinks his own reality floats about him like a bubble where ever he roams and people's behaviour means the same where ever he goes.
Do what you want at home but at my house flaunting your pee pee around will get yer poo poo kicked at the least.
When in Europe, I don't give a crap what they do or any one else does.
I thought we were discussing what community standards should be, and if they should be codified and backed by the coercive power of the government.
You certainly have the right and the power to boot me from your premises for flaunting my pee-pee at your house (though it IS truly magnificent, a sight everyone should see at least once in their lives). The issue isn't what's allowed at your house, it's what's allowed in public. And it's mainly about female breasts, not male or female sexual organs.
Do you consider it reasonable that a woman who goes topless in public is a criminal, and a man who does so is not?