In order to avoid being arrested, Stu (Kumail Nanjiani) tells Vic (Dave Bautista) that a white police officer assaulting a brown person would be bad for publicity. Vic replies that he isn't white, and Stu makes multiple guesses about his ethnicity. In reality, Dave Bautista is part Filipino on his father's side.
After the shootout in the vet's office, white doves fly around the room. This is an homage/spoof of action director John Woo's movies, which are known to have moments where white doves fly around during big action scenes.
First R-rated film released by 20th Century Fox since its acquisition by The Walt Disney Company.
Kumail Nanjiani gained 25 pounds of muscle for Eternals (2019) which was being filmed around the same time. This did not exactly suit his character in this film, however wardrobe managed to disguise the extent of his physical appearance through the choice of clothing and its relaxed fit.
Throughout most of the film Stu wears a T-shirt from the St-Viateur Bagel Shop, a well known Montreal Canada bakery open 24/7.