Saif and Varun then sang "Bole chudiyaan" from Johar's film "Kabhi Khushi Kabhie Gham..."

But the director quickly reacted, saying, "Kangana nahi bole toh achha hai (It's good you didn't say Kangana)." Kangana had fuelled the nepotism debate when she appeared on the "Ae Dil Hai Mushkil" director's chat show.

She had referred to Johar as "the flag bearer of nepotism", which had not gone down well with the director.

Johar had kickstarted careers of several kids of Bollywood, including Varun Dhawan. Karan recently tweeted images of Raj Kapoor’s grandson Aadar Jain who will soon be seen in a new Yash Raj Productions film. The director tweeted images of Aadar which marketed him as a bearer of the Kapoor genes that has been dominating Bollywood. In the photos, Raj Kapoor’s face was literally projected on Aadar’s tee shirt.