[...] Momo does have that social protocol database, after all, and I suspect it includes the general consensus that naked humanoids walking around public places is a no-no.
Uh.
In many western places, that's not really such a big no-no anymore.
Care to name one?
In some German towns like München or Berlin it wasn't that uncommon an appearance in the late 80's/early 90's.
It started as a protest against stuffy morals, some people got arrested, there were discussions, and the general agreement was, that it was the more graceful way to simply accept this kind of behavior.
But it grew so much out of fashion in the last 15 years that it's highly uncommon again, these days.
The last I heard is, that in the vicinity of Karlsruhe some people, bicycling along the Rhine, naked, were ordered to dress under threat of a fine.
Of course, there are a lot of beaches where wearing bathing clothes stands out like a sore thumb.