1 definition by xanthraxx80

Top Definition
When one has a contact on a messenger or e-mail of whom he or she does not remember.
IMer 1: "Hey, who is this?"
IMer 2: "So-and-so, who's this?"
IMer 1: "Oh, you know, what's-er-face. Can you remind me how I know you?"
IMer 2: "I'm not sure... but you were on my buddies list too. It's like amnesia!"
IMer 1: "E-mnesia!"
by xanthraxx80 November 15, 2009

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