>  Later, the
>  next day, one of the women told me "You Americans are strange.  Can't you
>  Americans distinguish between nudity and sex?" 
>   
Yes, there is a distinction between sex and nudity.  And Americans can
recognize that distinction.
Though cognizant of the distinction, I too become embarrassed when nude
before the masses.  You see, although sex and nudity are not the same, there
is a bridge between them.  
And I get embarrassed when I "erect" that bridge in public.
Franklin