fliff-fliff

n., int. - Euphemism for diarrhea. Adults tend to use "fliff-fliff" in the presence of children. The onomatopeoic origin stems from the noise created by a fiery blast of explosive diarrhea hitting the toilet water surface.

CHILD: "Mommy, I don't feel so good."
MOTHER: "Honey, do you have to go fliff-fliff?"

by Knig Knog July 2, 2009