The first episode of 'Koffee With Karan' season 5, which featured the host Karan Johar interviewing Shah Rukh Khan and Alia Bhatt, aired on Sunday night. SRK said that he would like to know where Ranveer Singh got the "padded underwear" which he is wearing in 'Befikre'. Meanwhile, Alia answered all 13 questions correctly in the 'Who Knows Who' quiz.