Top Definition
A mixed drink cocktail consisting of virgin prune juice and inexpensive whiskey, often garnished with Fiber One bars or Uncle Sam cereal. While offering the health benefits of the Chinese summer drink "suanmeitang," The Grigsby is rivaled only by the Bloody Mary as the most popular mixed drink served during breakfast.

-1 part whiskey or bourbon (the cheaper, the better)
-2 parts prune juice
-coarsely ground high-fiber cereal for garnishing
"Dude, I got so drunk last night, I binged on, like, an entire cheese wheel. Now I'm feeling a little bound up. I need The Grigsby to put me right so I can TAKE a Grigsby."
by austicoatk September 29, 2011
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