scatology

scatology
    n 1: a preoccupation with obscenity (especially that dealing
         with excrement or excretory functions)
    2: (medicine) the chemical analysis of excrement (for medical
       diagnosis or for paleontological purposes)
    

37 Moby Thesaurus words for "scatology":
      argot, bad language, billingsgate, blue language, cant,
      colorful language, cursing, cussing, dirty language, dirty talk,
      dysphemism, evil speaking, filth, filthy language, foul language,
      gibberish, gobbledygook, jargon, lingo, mumbo jumbo, obscenity,
      patois, patter, phraseology, profane swearing, profanity, ribaldry,
      slang, strong language, swearing, taboo language,
      unparliamentary language, unrepeatable expressions, vernacular,
      vile language, vocabulary, vulgar language