WordNet (r) 3.0 (2006):

fuck off
    v 1: be lazy or idle; "Her son is just bumming around all day"
         [syn: bum, bum around, bum about, arse around,
         arse about, fuck off, loaf, frig around, waste
         one's time, lounge around, loll, loll around,
         lounge about]
    2: leave immediately; used usually in the imperative form;
       "Scram!" [syn: scram, buzz off, fuck off, get,
       bugger off]
    3: get sexual gratification through self-stimulation [syn:
       masturbate, wank, fuck off, she-bop, jack off,
       jerk off]