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1.
The process where a person on Facebook posts their status as a letter, either starting by A or a random one. A random person comments on their status the next letter, and usually goes into a cycle where said person and the OP share the next letter.
If someone breaks the cycle, such as posting something unrelated to a letter, the game is over.
Kelly: A
Anna: B
Kelly: C
Anna: D
Fred: What are you guys doing?!
Kelly: Darn! The ABC Game is over!
by Kittenz&Turtlez January 28, 2012