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Commonly used term by those who posses certain "Jerry Lewis-like" qualities*, usually found superfluously at the end of a sentence.

*ie. Professor Frink of The Simpsons.
Please don't be touching my machine or you could be causing us terribble pain with the Ouch, and the Flavin...
by Ryan-michael Lindsay October 10, 2004
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Reference to "Simpsons" character Professor Frink. Describes a geek who is socially mal-adjusted. Often possesing technical know how.
"Gee that flavin will never get laid...he should stay in his parent's basement."
by gigglebiotch March 21, 2005
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1. A water-soluble yellow pigment, including riboflavin (read the table of ingredients of any food you eat; chances are, you'll find it), found in plant and animal tissue as coenzymes of flavoprotein.
2. A ketone, C10H6N4O2, that gives color to various natural yellow pigments.
The chemist added flavin to his new concoction.
by Hoyvin-Mayvin June 08, 2005
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