Serious stomach sickness, turns your belly into a unstable nuclear power plant, ready to explode.
Warning: Better not combine the diarrheal illness with excessive alcohol consumption, or else the shit literally goes the wrong way. In other words, you will nearly puke your guts out.
Including the gastric acid, the womit will contain bladder juices and turds from your shit canals. The waste discharged from this persons defecation usually end up near the toilet, and not where it should. Keep your distance to contaminated objects.
(On a random bathroom the day after new years eve): "Damn, it smells like somebody had acute cholera in here! The room is filled with a odour like gallbladder in a heavy mixture with puke and feces!"