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1 definition by Mr. Dandy

An irrecoverable condition marked by impulsive and prolonged lying. Generally, the subject matter is almost nonsensical and obviously bogus. The sufferer often uses this condition to make himself/herself appear supperior to others and at other times does it for no apparent reason.
John: "Wouldn't it be funny to drive a semi-truck to school?"
Justin (Griffinitis sufferer): "My dad already bought me one to drive whenever I ditch my learner's permit. I already put on some pimp spinners and it has a kickass system."
by Mr. Dandy July 15, 2006