You are so exhausted and hungry that you start to have auditory and visual hallucinations. Your responses are delayed and distorted, comatose becomes comatoast. Once you do respond, if you do respond to social interactions, your response can appear completely irrelevant due to the lag (in fact your mind and body have separated and it takes some time for your neural networks to reach the cave where your processing mechanism is hiding). You are unable to make appropriate choices and when the barista asks single or double to reply double if not triple. Your overindulgence in caffeine, alcohol, chocolate and sex fail to return you to a normal state. There is no known cure for comatoast but the state does lapse and symptoms may disappear for months at a time (especially when you abandon your worldly possessions, quit your job and wander in tropical countries).

so fucking 'toasted' that you're in a coma.

In a coma, not likely to recover, the patient is "toast". simply replace comatose with comatoast. This got started when a family member mispronounced "comatose" and we realized that comatoast was in some cases more descriptive of the patient condition and prognosis.

getting so toast the night before that you are in a coma like state in the morning

The only satisfying food you can be bothered to make the morning after you drank yourself into a coma. Can taste like the perfect hangover cure.

A sudden disturbance of sensory function, equilibrium, or mental faculties usually caused by reaction to something achieved (or escaped) by a narrow margin.

When somebody eats shit hard.