Yashpal Sharma's character in this film is canninly named as "Sudhir Vinod" which is reference to the lead characters of the film Jaane Bhi Do Yaaro who were named after its Asst. Director Sudhir Mishra and Production Controller Vidhu Vinod Chopra.
In Shool the scene where the character Bachchu Yadav gets angry on a guy asking him to show how he does "laugh from inside" is an homage to the "I'm funny. How?" scene between Joe Pesci & Ray Liotta from Goddfellas.