According to directors Jim Abrahams, Jerry Zucker and David Zucker on the DVD commentary, the film was originally written to be a "movie within a movie" for a sequel to The Kentucky Fried Movie (1977), but when that movie was aborted they expanded the story to this full-length feature.
Striped controller:
Bad news. The fog's getting thicker.
Johnny:
And Leon is getting laaaaarrrrrger.
The sign shown through the window of the psychiatric hospital has Pentothal misspelled as "Pentathal".
English
$83,400,000 (USA)