prankster

from WordNet (r) 3.0 (2006)
prankster
    n 1: someone who plays practical jokes on others [syn:
         {prankster}, {cut-up}, {trickster}, {tricker}, {hoaxer},
         {practical joker}]
from Moby Thesaurus II by Grady Ward, 1.0
61 Moby Thesaurus words for "prankster":
      bad boy, banana, booger, buffoon, bugger, burlesquer, caricaturist,
      clown, comedian, comic, cutup, devil, elf, enfant terrible,
      epigrammatist, funmaker, funnyman, gag writer, gagman, gagster,
      hood, hoodlum, hooligan, humorist, imp, ironist, jester, joker,
      jokesmith, jokester, knave, lampooner, little devil, little monkey,
      little rascal, madcap, minx, mischief, mischief-maker, parodist,
      pixie, practical joker, puck, punner, punster, quipster,
      rapscallion, rascal, reparteeist, rogue, rowdy, ruffian, satirist,
      scamp, scapegrace, wag, wagwit, wisecracker, wit, witling, zany
antiflux / dictionary / prankster
grant@antiflux.org