A meme is born.
The meme becomes popular local to its origin.
Compounded overuse causes the meme to be burned into collective memory and distributed across the internet.
The meme reaches the bottom of the internet.
In some cases the meme has gone even lower and surfaced IRL.
Those that gave birth to the meme are filled with regret.
The meme lives on, spreading, and becoming moar and moar dumbed down for a mass audience, so that over time it bears little or no resemblance to the original.
The meme is put on Snorg Tees and Facebook bumper stickers.
The meme then must be tossed into the fires of Mount Doom by a rather unsuspecting hobbit for its evil to be banished.