Spent grain is a byproduct of brewing beer, but can also be used to describe feeling like crap after a long weekend of drinking.
Dude.. I hit ten breweries Saturday.. Then after I drank like twenty-five margaritas on Sunday, I passed out on the beach and got a sunburn. I feel like spent grain.
by MikeKn June 03, 2008

6 Words Related to spent grain

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