Australian beauty Tania Zaetta makes her debut 'Bunty Aur Babli' with Amitabh Bachchan, Abhishek Bachchan and Rani Mukherjee. When they meet again they recall the lessons Big B taught her in Agra, during the shooting. "He taught me to chew on betel leaves and nuts after dinner and I would religiously follow his instructions each time, till my teeth and tongue actually turned red in colour!, she said.