WordNet (r) 3.0 (2006):

scatological
    adj 1: dealing pruriently with excrement and excretory
           functions; "scatological literature"

Moby Thesaurus II by Grady Ward, 1.0:

53 Moby Thesaurus words for "scatological":
   Rabelaisian, abusive, blasphemous, calumniatory, calumnious,
   coarse, comminatory, contumelious, crappy, cursing, damnatory,
   denunciatory, dirty, dungy, dysphemistic, epithetic,
   excommunicative, excommunicatory, excremental, excrementary,
   execratory, fecal, feculent, filthy, foul, fulminatory,
   imprecatory, indecent, jargonal, jargonish, maledictory, nasty,
   obscene, profane, raunchy, raw, ribald, risque, scatologic,
   scurrile, scurrilous, shitty, slang, slangy, smutty, stercoraceous,
   stercoral, taboo, urinary, urinative, vile, vituperative, vulgar