We now hear John has been persuaded to take a more active part in the sperm-donation theme of the film. This week John shot a promotional video for the film Vicky Donor to support the cause of sperm donation.

In the video he'd be seen actually agreeing to donate his sperms publicly. Says a source, "The concept of the song is that John appears as himself at a function where he addresses the issue of sperm donation.

Some ladies in the audience ask him if he would agree to donate sperms for infertile couples. John agrees.

Then some lady asks if he would donate his sperms for her." Apparently John was extremely shy of being part such an aggressive campaign for sperm donation.

But he finally agreed. Director Shoojit Sircar confirms John's public nod to sperm donation.

Says Sircar, "It's a song on stage where my film's lead pair Ayushmann Khurrana and Yami Gautam are joined by John on stage at a public function. All I can says, John's sperms are much in-demand.

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