Synonyms for Fuck Off (same or very similar meaning)
WordNet sense 1 (be lazy or idle):
bum, loaf, loll, arse around, arse about, bum about, bum around, frig around, loll around, lounge about, lounge around, waste one's timeWordNet sense 2 (leave immediately; used usually in the imperative form):
get, scram, bugger off, buzz offWordNet sense 3 (get sexual gratification through self-stimulation):
masturbate, she-bopFrom the ODE community, based on WordNetadd/edit