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1.
(Pronounced Mall-leh-newd)

The act of being hyped up for something, only to find when that something comes, doesn't deliver.
When Peter Mollyneux introduced Fable II and said that the dog was his, there would be no other dog like it, due to the fact that there would be a special randomization for your doggy companion. After Fable II came out, it turned out that everyone got the same dog. Not only that, but you were Mollyneuxed out of a Hobbes toy, after the fact you pre-ordered the game.
by TacoRemix September 15, 2011
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