A case of a harsh, sometimes very liquid excrement that is expelled by a person after consuming a burrito or other menu item from the Chipotle chain of restaurants. This event occurs usually 12-24 hours after the ingestion of said menu item. It is a variation on Montezuma's Revenge, though unlike Montezuma's Revenge, it is generally accepted that Barbacoa's Revenge is not related to local parasites but instead a natural reaction to the fiber and other nutritional content found in a menu item from Chipotle. Each case of Barbacoa's Revenge can vary due to personal ingredient preference. One need not have barbacoa on their burrito, or indeed meat at all, to have contracted Barbacoa's Revenge.
The drowsy and slightly painful state experienced after eating a standard BBQ meal, which is inevitably consumed in very large quantities.
Chipotle's "Barbacoa" burrito is only one example of a large quantity of BBQ beef. While one may very well experience drowsiness or discomfort after its consumption, a true barbacoma can not be had without at least one of the following sides: sweet potato pie, sweet corn, cornbread, or baked beans.
The drowsy, listless feeling endured after noshing on way too much food. Specifically, barbacoma often pertains to the episode following consumption of Chipotle burritos (perhaps filled with barbacoa), though it is applicable to large quantities of food in general.
After eating all that Chipotle, I do believe I've slipped into barbacoma and will be unable to accomplish anything for the foreseeable future. Two burritos are too many.