The Collaborative International Dictionary of English v.0.48:

Story-teller \Sto"ry-tell`er\, n.
   1. One who tells stories; a narrator of anecdotes,incidents,
      or fictitious tales; as, an amusing story-teller.
      [1913 Webster]

   2. An historian; -- in contempt. --Swift.
      [1913 Webster]

   3. A euphemism or child's word for "a liar."
      [1913 Webster]

WordNet (r) 3.0 (2006):

storyteller
    n 1: someone who tells a story [syn: narrator, storyteller,
         teller]
    2: someone who tells lies [syn: storyteller, fibber,
       fabricator]

Moby Thesaurus II by Grady Ward, 1.0:

97 Moby Thesaurus words for "storyteller":
   Ananias, Baron Munchausen, Father of Lies, Satan,
   Sir John Mandeville, advertising writer, anecdotist, annalist,
   art critic, author, authoress, belletrist, bibliographer, coauthor,
   collaborator, columnist, compiler, composer, consummate liar,
   copywriter, creative writer, critic, dance critic, diarist,
   dirty liar, drama critic, dramatist, encyclopedist, equivocator,
   essayist, fableist, fabler, fabricator, fabulist, false witness,
   falsifier, fibber, fibster, fictionist, free lance,
   free-lance writer, ghost, ghostwriter, habitual liar, humorist,
   inditer, liar, literary artist, literary craftsman,
   literary critic, literary man, litterateur, logographer,
   magazine writer, man of letters, monographer, music critic,
   mythmaker, mythomaniac, mythopoet, narrator, newspaperman,
   novelettist, novelist, palterer, pamphleteer, pathological liar,
   penwoman, perjurer, poet, prevaricator, prose writer, pseudologist,
   pseudologue, raconteur, reciter, recounter, relator, reviewer,
   romancer, romancist, sagaman, scenario writer, scenarist, scribe,
   scriptwriter, short-story writer, spinner of yarns, storier,
   taleteller, technical writer, teller of tales, word painter,
   wordsmith, writer, yarn spinner, yarner