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6.
When a man/woman is unable to properly digest ones food due to the fact that their stomach cannot digest all the different flavors and particles leading to a feeling of elation followed by the collapse of their system which cause said person to crumple into a heap on the couch for a designated period of time(average 1-3hrs depending on the toxicity of the food) followed by the person to wake up the following morning and disappear into the nearest restroom/underbrush for prolonged periods of time
After Charlie ate that burrito in under four minutes, I knew I would have to wake up after him because of his food coma.
by veggieman24 December 29, 2011
 
8.
A period after a large meal, usually resulting in a feeling of drowsiness and the need to unbuckle your belt. Common days where a Food Coma is prevalent are Thanksgiving and Christmas due to the importance of huge meals and overly fattening food.
I experienced a major Food Coma over Thanksgiving Break, because my mom made stuffing, turkey, mashed potatoes and pie... I ate all of it.
by Sick From Eating November 25, 2011
 
9.
An excuse to blow off work after eating too much at lunch.
I think I'm gonna crawl under my desk after that heaping helping of mashed potatoes, because I can already feel the food coma creeping up on me...
by kellyj2777 November 11, 2005