It's Hinglish, innit?

From BBC News:

Hinglish - a hybrid of English and south Asian languages, used both in Asia and the UK - now has its own dictionary.

A dictionary of the hybrid language has been gathered by Baljinder Mahal, a Derby-based teacher and published this week as The Queen's Hinglish.

Much of it comes from banter - the exchanges between the British white population and the Asians," she says.

"It's also sometimes a secret language, which is being used by lots of British Asians, but it's never been picked up on."

And in multi-cultural playgrounds, she now hears white pupils using Asian words, such as "kati", meaning "I'm not your friend any more". For the young are linguistic magpies, borrowing from any language, accent or dialect that seems fashionable.

Kati? That would be katti, I think, as in 'I'm katti with you' (cool title for Himesh Reshammiya's next doleful hit?)