After a long night of drinking and eating jalepeno poppers, the next morning you wake up with explosive diarrhea that feels like fire shooting from your asshole

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Burning diahrrea. Often the product of eating fast food from shitty mexacian restraunts. Even worse when you eat lots of extra hot sauce.

spicy-food-induced diarrhea that makes you feel like flames are coming outta your ass

The painful, burning and often explosive, projectile poo that results from eating too much mexican food.

After eating spicy food, a portal to hell opens in one's rectum causing pain and discomfort of epic proportions.

Diarrhea that burns as hot as fire, leaving you charred.