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noun: the residue of fecal matter left on the toilet bowl after a quick and powerful bowel movement, which commonly proceeds diarrhea.
Often the subject of arguments in shared households of unrelated persons: "You can't just walk out of the toilet after an explosive shit, leaving a bunch of proponga for the next guy to deal with! Use the fuckin' brush, man!"
by FrankenSchwartzen July 07, 2020