chicken head n.
[Commodore] The Commodore Business Machines logo, which strongly resembles a poultry part (within Commodore itself the logo was always called `chicken lips'). Rendered in ASCII as `C='. With the arguable exception of the Amiga (see amoeba), Commodore's machines were notoriously crocky little bitty boxes (see also PETSCII), albeit people have written multitasking Unix-like operating systems with TCP/IP networking for them. Thus, this usage may owe something to Philip K. Dick's novel "Do Androids Dream of Electric Sheep?" (the basis for the movie "Blade Runner"; the novel is now sold under that title), in which a `chickenhead' is a mutant with below-average intelligence.