1. 
[syn: bantering, facetious, tongue-in-cheek]
The Collaborative International Dictionary of English v.0.48:
Facetious \Fa*ce"tious\, a. [Cf. F. fac['e]tieux. See
   Faceti[ae].]
   1. Given to wit and good humor; merry; sportive; jocular; as,
      a facetious companion.
      [1913 Webster]
   2. Characterized by wit and pleasantry; exciting laughter;
      as, a facetious story or reply. -- Fa*ce"tious*ly, adv.
      -- Fa*ce"tious*ness, n.
      [1913 Webster]
WordNet (r) 3.0 (2006):
facetious
    adj 1: cleverly amusing in tone; "a bantering tone"; "facetious
           remarks"; "tongue-in-cheek advice" [syn: bantering,
           facetious, tongue-in-cheek]
Moby Thesaurus II by Grady Ward, 1.0:
40 Moby Thesaurus words for "facetious":
   Attic, biting, blithe, brilliant, clever, comic, comical, droll,
   funny, humorous, humorsome, jesting, jocose, jocular, jocund,
   joking, joky, jolly, joshing, jovial, keen, keen-witted, laughable,
   ludicrous, merry, mordant, nimble-witted, pointed, pungent,
   quick-witted, rapier-like, salt, salty, scintillating, sharp,
   smart, sparkling, sprightly, whimsical, witty