/> The ratio of untruth regarding the Big B grows by the Friday.

The latest wacked-out whisper doing the rounds is, he has agreed to play the host of a KBC-styled game show in Danny Boyle's Slumdog Millionaire, the Mumbai-based adaptation of the Vikas Swarups novel QA about a 18-year old boy who wins the top prize in Kaun Banega Crorepati.

A Mumbai tabloid quotes "a reliable source" as saying, "Amitabh Bachchan is in talks with Danny and his casting agents. If all goes well, Bachchan will start filming in January."

But according to Mr Bachchan he hasn't even been offered any role in Danny Boyle's film.

"This is the first time I'm hearing about it. I've no knowledge of this...In January I start shooting for Mira Nair's film.I'd love to meet the reliable source behind this story."

According to an Indian actor from the film, "It's impossible for Mr Bachchan to be cast in the role. It requires someone far younger."