Mexican Screamers

Liquidised shit of the sort that burns on the way out and pebbledashes the toilet bowl. Mexican Screamers are caused by consuming quantities of very spicy food, generally of the Mexican variety, hence the name. The "screamers" part comes from the fact that the extreme burning sensation just before, during, and after passing motions, causes one to scream in pain.

ME: Those pulled pork quesadillas were lovely, but those enchiladas gave me the most horrible bout of the Mexican Screamers!
friend: What are "Mexican Screamers?"
ME: Flaming hot diarrhea caused by eating very spicy food!