The upcoming trailer of Vicky Kaushal's 'Bad Newz' has enthralled audiences with its intriguing plot. It begins with a bewildered Triptii Dimri, who discovers that she is pregnant but is unsure of the identity of the father. The film is not just for laughs. While the mayhem is comical, it also explores the rare medical condition of heteropaternal superfecundation. But the question is… does this condition really exist? If yes, how rare is it? Watch this video to find out.