Top Definition
A colored counterfeit dollar bill that increases one's geometry marking period average by a third of a point, and midterm/final averages by two-thirds of a point. Given out by Mr. Helsel, it comes in assorted colors that differ for each class and includes a unique 3-digit serial code. The geodollar chest is hidden in the second to top shelf in Mr. Helsel's closet. Given out to students who complete a challenging task or participate a lot.
"Find a pattern to pi and you get a geodollar. Neeer!" -Mr. Helsel
by Nur Nur January 24, 2008

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