Maybe ten years ago, I was seeing this Japanese lass.
We were having sex for the first time and we'd just started to get into it, and she said "no".
Naturally, I stopped. She asked me why I stopped. I told her I'd stopped because she said "no". She asked me to start again, so I did. Just as I was getting into my stroke again, she said "no" again. So I stopped again. Then she asked me why I stopped...
It went on like this for a few iterations. Turned out that was just the way she acted during sex. It proved quite difficult to train her out of it. We settled on a "safe word".
We dated off and on for a couple years after that.
A few years later, a friend of mine brought me a book back from Tokyo, a phrasebook for Japanese women wanting to date western men.
Along with helpful phrases such as "I don't want to do the anal please", it also contained useful advice such as "Don't say 'no' if you want to have sex. Western men will believe you really mean 'no'."
Paraphrasing, but that was the gist.
I'm not sure what this proves, if anything, but I thought I'd throw it out there, if only to change the subject.