Bollywood actors Arjun Kapoor and Varun Dhawan are childhood friends and they know each other inside out but Karan was privy to their well guarded secrets now when Arjun spilled the beans about their physical assets.

Known for getting the best candid confessions on his show, Karan pulled an encore in his latest episode with Varun Dhawan and Arjun Kapoor.

Karan Johar To Arjun Kapoor: "Do you think you have a bigger penis than Varun?"

Arjun Kapoor: "I am pretty certain of it."

Varun: "I don't think he knows anything."

Watch Koffee with Karan to check out the full conversation between Karan and these two Bollywood chuddy-buddies.