WordNet (r) 3.0 (2006):

buzz off
    v 1: leave immediately; used usually in the imperative form;
         "Scram!" [syn: scram, buzz off, fuck off, get,
         bugger off]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "buzz off":
   be getting along, come away, depart, exit, gang along, get along,
   get away, get off, get on, get under way, go, go along, go away,
   go off, go on, leave, march off, mosey, move away, move off,
   move out, pull out, sashay, sashay off, stagger along, take flight,
   take wing, toddle along, up and go, wing it