As the host of “Kaun Banega Crorepati”, megastar Amitabh Bachchan often intersperses humour in his conversations with the contestants. During an episode shot recently, he disclosed how two lizards brought luck in his life. A source from the show’s set revealed that Big B spoke about it when a contestant named Sheela Gupta from Uttarakhand told him that she’s on the KBC hot seat because a lizard landed on her and it turned out to be lucky for her.