The most recent (retail release in January of 2007) operating system produced by a large, well known and incompetent software company - also known as Microshite. Prone to the usual stupidities and incompetencies that this company are renowned for churning out. As the food is to 'MacDonalds' they represent the same for software - lowest common denominator, also known as Garbageware or nuffware.
An unfortunate who uses MS product (or is forced to, due to the platform used in the workplace): "....just loaded the latest version of Microshites OS, and it's really giving me the Shitsta!"
"...man this Shitsta is real 'dogware', just keeps crashing and screwing up my data, who's the 'Nuffer' that made this crap anyway!...."
"..so, BG gives the Shitsta to the world, as his departing gift upon leaving Microshite..."
BG, aka 'Bill Gates', also known as the 'Billionare Geek' or 'Boy Gumby'. Founder of Microshite. Recently, due to feelings of shame and guilt - accumulated over many years of pillaging and plundering all competition that stood in his way - plus an over-inflated bank balance and need for a good tax dodge, has created the 'Bill and Melinda Gates Foundation' to become the newly re-invented "Beneficiant Goodguy' in an attempt to atone for past sins. BG is also known as 'the scum that rose to the top' of the software dogpile.