system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do producers of movies like Jackass and Borat acquire consent of the people they film?
gpt
They use a consent form. Basically they sign the right to use their name/image/voice in the film. 

They generally do this by telling them what they are signing. But sometimes they say anything (such as this is a school project) to get a signature and go on their merry way. That's when lawsuits generally happen.