The title of the film, "Loser Baby" was born out of an inside joke. According to Dakota Johnson, in a group text, actor Blake Lee "called Talia a loser baby because she was being a loser baby," and writer/actor Talia Bernstein saw the creative potential of using it as the film's title.
The majority of background actors were friends and family of the main cast, including Dakota Johnson's sisters and staff from TeaTime Pictures.