A fork of Rural Dictionary
a crap lake filled with algae and poisonus fish in ohio that hillbillys go out on in the winter when its froze over with there 4-wheelers
(you) lets go to grandlake st. marys. (friend) why it smells like ass and i dont want to die from the algae in the water (you) ur right i just cant wait till winter when i can drive my 4-wheeler on it