Thank you all for that!
I had three days off so I went and visited some old friends in Tokyo and did indeed have a very good time.
Also, if anyone ever offers you Hawaiian Rosewood (aka Hawaiian Woodrose) as a psychotropic drug, I now say, don't bother. The psychotropic effects are very modest, and were only made worthwhile by the viewing platform atop the 52 story skyscraper with the lights of a city of 32 million surrounding it. (Photos will follow eventually).
Meanwhile, the stomach gas was unbelievable, with quite uncomfortable visceral cramping.
Well, it was something I hadn't tried before and it was interesting. I won't be repeating it.
Thanks again all!
