People coming to Japan often get the impression that they'll need to be ultra-careful about minding their manners. When, they get here, however, they're often surprised by all the things they see in Japan that would be considered rude in their home countries. I think the Japanese as a whole (sorry to generalise!) are pretty good at promoting themselves as an ultra polite nation so when old ladies, for example, barge past you on the subway it comes as a real shock.
I thought this was
a funny article on the subject but there are loads more examples. I wonder if anyone has any others?
Cheers!