The meme Got started July 20th of 2010, as seen here its where a man argues with spitting goat.

Here it is with subtitles

When it wass first posted it became big.Geting spoofs.


Then The video Made an appearance on The E! TV Show The Soup

Then RWJ Made A video About it

Then 10s to hundereds of re uploads of the clip ran through youtube.
It's On comdey Central.com,BuzzFeed.com, and More.
The Goat even has a(Sort of) Sparta remix

and of course Re's:

Now The How ever you want to call it goat from a variety of names from angry goat to spitting goat to Spitting Billy Goat, Is Still Getting Bigger and bigger by the hour.