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.

Something cool or in.

Of good quality

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.

Reference to "Simpsons" character Professor Frink. Describes a geek who is socially mal-adjusted. Often possesing technical know how.

yo dog dis is to be mad drinkin.