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A nickname for a person residing in the Southern or Southeastern United States that speaks very fast and frequently.

The nickname originated in Georgia because of the drawl in the dialect there is sometimes hard to understand when you have a someone talking at a fast rate.

Also used to describe rappers that rap quickly such as Twista
Excited fast talker: "omgwtfbbqsauceicantbelieveijustdidthisomgyoushouldabeenthereitwascrazy!!"

Person 2: "Slow down Mouth Of The South I can't understand what you are saying chatterbug"
by ADD+me August 19, 2009