According to the sources, the movie reached its climax and they were shooting an important interrogatory sequence. Upasana Singh was so engrossed with the scenes, that she lost control and thwacked Rajeev Nigam hard. It was only after the popular comedian yelped that she realized the intensity. She hit him good, and Rajeev made a comic face that had the entire crew explode in laughter. The expressions were so genuine that they decided to use it in the film.
Later on, Upasana Singh came over to apologize, but Rajeev being a true professional, brushed it off saying that it’s good she gets into the skin of her character. But, in his typical comedic fashion added that, it good she didn’t have a gun in her hands.
‘Hum Sab Ullu Hain’ stars Gavie Chahal and Vandana Lalwani, along with actors Rakesh Bedi, Upasna Singh, Rajesh Puri, Vijay Ishwarlal Pawar, Sunil Pal, Rajeev Nigam, Surinder Singh and Amrita Chhabria. Versatile playback singers Alka Yagnik, Kunal Ganjawala and Javed Ali have lent their voices for the movie.