Several blogs I read have linked to this article about Hinglish. When I lived in Nairobi, all those years ago, folks spoke Sheng, which was a mix of Swahili, English, and pretty much anything else that came along. It mutated so fast that you either knew it or you didn’t – there was no way to learn it. These days, it’s called something different, and has a completely different vocabulary. It’s interesting to watch the changing vocabulary used on my Kenya site, even though I no longer understand most of what is said there.