Would that be scatological or Eschatological?
Escatos, h, on
or, eschatos, e', on for a transliteration, not to be confused with a translation, which would be along the lines of "the furthest, uttermost, extreme." Nevermind the "utter-most" but definitely extreme in the household in which I was raised. But apparently no longer extreme in today's households...
Holly Mills
Amherst, VA
(seven years formal classical Greek study)