The often disregarded fecal matter that morphs from a once gelatinous substance to a hard, concrete like formation that stops previously liquidized fecal excrement in it's tracks, whereas no further deposition of excremental matter may occur henceforth. (See "poop plug.")
Dangit Johnny! If you don't hurry up I'll surely soil myself! My plug turd is nearing it's expulsion!
by Illicitrampage August 2, 2019