Top Definition
acronym for Mel Gibson Mysteriously Disappearing Accent Syndrome.

It describes anyone who, over the years, has either accidentally or purposely altered their accent. This can occur by someone moving to a new country or even part of the country, or by someone setting out to change their accent.
It's a shame that Tim fell victim to MGMDAS, his Scottish accent was so sexy.
by Khanada Rhodes July 05, 2005

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