Deliberate mistake: After dropping Rick off at the set, we see Cliff driving his car back to the house to fix the antenna. View forward from inside the car, the rearview mirror is obviously missing. The next scene, outside with the car coming toward you, the rearview mirror magically reappears.
Once Upon a Time in Hollywood (2019)
1 deliberate mistake - chronological order
Directed by: Quentin Tarantino
Starring: Brad Pitt, Leonardo DiCaprio, Timothy Olyphant, Margot Robbie, Austin Butler, Maya Hawke, Sydney Sweeney
Other mistake: Cliff's dog is referred to as female but when it jumps up at a door towards the end of the film, it is male.
Cliff Booth: Eh... You are?
Tex: I'm the Devil, and I'm here to do the Devil's work.
Cliff: Nah... It was dumber than that, something like Rex.
Katie: Shoot him, Tex!
Cliff Booth: Tex!
More trivia for Once Upon a Time in Hollywood
More questions & answers from Once Upon a Time in Hollywood
Answer: To put some context into the scene, three members of the Manson family (Tex included) have broken into Rick Dalton's house and are holding Cliff Booth at gunpoint. Cliff, who is high on drugs asks "Are you real", to which Tex replies "I'm as real as a donut, mother fucker." Tex was trying to answer Cliff's question stating whether or not he was real, but in the most intimidating way possible, and I guess donut was the word that came to mind that described how real he was.
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