This came up in an conversation with a friend. Given the plummeting standards of this blog, I don't know if this can be a regular feature here, but what the heck.
Language: Vomitelsh (derived from, and exactly the same as Welsh)
Main revenue source: Tie-up with an internet tycoon to make money off .vom URL extensions. (e.g. google.vom)
The colours symbolise a maturing of vomit from the fluorescent green of adolescence to a bright yellow signifying some liver problem. The words are Vomitelsh and mean 'Why throw down when you can throw up?'
Ironically, the average citizen (depicted in the flag) always throws up while looking down. This signifies the irony of life in vomitland. However, vomiting is not legal unless the depicted complex pose is reached, which is in reverence to the country's pagan God of Hurl.