Easter egg
From Encyclopedia Dramatica
An easter egg is the chocolate round (well, oval) thing that is traditionally given to kids around Easter, which they promptly proceed to NOM NOM NOM on.
On the Internets and in computing in general and even elsewhere, an Easter egg is a hidden thing waiting to be found in a form of media... for clarity, the official Easter egg website defines it as "hidden feature or novelty that the programmers have put in their software". Most NORPs don't know that these things even exist, and that the so-called professionals (who made teh softwarez that people use for serious business) like all asspies need a little eccentricity in their lives, so they add quirky little features in every fucking piece of software they make.
Whilst you could almost expect Easter eggs in video games, when most Microsoft products have them, you may start to think that something strange is going on. Also, many Easter eggs feature a list of credits to the programmers who wrote the program, because they don't get recognition from those who use the software because nobody cares.
[edit] Easter Eggs Website
The website eggs.com has over 9000 listings of Easter eggs, in "software, music, movies and more". The website allows users to rate each Easter egg in terms of how awesome (or not) they are, from win to outright fail. Sometimes the techniques produce something crap, and other times it is something quite win. Very rarely though do they produce lulz.
Their definition of an Easter egg is that it is an intentionally included, hidden, not a virus or trojan, accessible to everyone, enjoyable, and put there for personal reasons.
Microsoft used to include Easter eggs in their products, but stopped doing so in the early 2000s because they were pwnt by new laws against such bullshit being included in such widely-used software. They had mini-video games in them that were like, kinda, unwinnable and pointless.
