Chicken Bean is Frank's imaginary movie, as can be seen in this illustration, drawn by the movie's producer and director, Frank. Ria kindly wrote in Frank's notes.
He specially requested that this be posted on the blog.
By the way, I still don't understand why the Nest Holder is the thing that holds the nuts, but I have determined that Chicken Bean has nuts just in case he gets hungry.
An interview with the producer/director:
Who is Chicken Bean?
Frank: He's shaped like a chicken.
Does he talk?
Part of the storyline involves Darth Vader, who stole a rifle from Chicken Bean. "Save" (the short guy on the left side) took the rifle back and gave it back to Chicken Bean.