Inspired by a railway sign alering passengers to a level 5 goose warning ("The goose on platform 2 is violent and has claimed the platform as his own. Please avoid."), Ian Millhiser (imillhiser), explored what further levels of goose warnings mean:
[...]
At level 12, the newly formed Goose Free State demands full independence and sovereignty over its ancestral lands.
Level 17 is when the United Republic of Waterfoul successfully detonates an atomic weapon in a controlled test.
At level 19, the Waterfowl receive a permanent seat on the United Nations Security Council.
At level 23, the war came.
[...]
And that's just the start; it builds and builds from there. Go, read, enjoy.