GDM

[The Beatles]

GDM: GNOME Display Manager
GNOME: GTK Network Object Model Environment
GTK: GIMP Toolkit
GIMP: G<span style='color:BLACK'>N</span>U Image Manipulation Program
G<span style='color:BLACK'>N</span>U: G<span style='color:BLACK'>N</span>U's Not UNIX
G<span style='color:BLACK'>N</span>U: G<span style='color:BLACK'>N</span>U's Not UNIX
G<span style='color:BLACK'>N</span>U: G<span style='color:BLACK'>N</span>U's Not UNIX
G<span style='color:BLACK'>N</span>U: G<span style='color:BLACK'>N</span>U's Not UNIX
G<span style='color:BLACK'>N</span>U: G<span style='color:BLACK'>N</span>U's Not UNIX
(Stack overflow. Core dumped.)
UNIX: Uniplexed Information and Computing System

edit: d**n that word filter

[Wuddship]

*laughs*, Beatles is complaining about the word filter, aren't you the one who can change it?

[The Beatles]

Yes, but I hadn't done that one to GNU's Not Unix and WINE Is Not an Emulator.