1 definition by Octopus Supremo

Top Definition
The way in which a young, insecure and fat girl will constantly rant on very loudly about how attractive they think they are.
Cynthia: "I have gigantic tits! They're double D's!"
Leon: "Man, that Cynthia has a serious case of Fat Girl Syndrome."
by Octopus Supremo February 14, 2006

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