"I am very excited, especially after Chashme Baddoor (which my father directed). The film has done good business," Varun, who made his Bollywood debut with Student Of The Year in 2012, said here.
"I cannot argue on the sets (with my father), otherwise I will be slapped," he added.
Main Tera Hero, produced by Ekta Kapoor, goes on floors in June.
"I am very excited to work with him (David), and not only because he is my father, but because he has done so many successful films before," Varun said.
"I am dying to do comedy. I am really excited to get into that," said the young actor.
David is known for making comedy films like Coolie No. 1, Hero No. 1, Deewana Mastana, Biwi No. 1 and Haseena Maan Jaayegi.
Meanwhile, Varun who was present at a special screening of the film Bombay Talkies which has been made in celebration of the centenary year of Indian cinema, says he feels "privileged" that he made his debut just before Indian cinema turned 100.