1. A message used by the hand that is a direct insult to another person.
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Go away!!!!!!!!!!! AND LEAVE ME ALONE!!!!

"Fuck off." It's such a lovely pair of words! And it's international. I don't care where you are - if somebody's fuckin' with your bags in Lhasa Airport in Tibet and he's got a shaven head and saffron clothes on and you say "hey, fuck off!", he knows *exactly* what you mean. Exact - he will fuck off. Off he will fuck! 'Fuck off' doesn't mean 'go away.' 'Fuck off' means 'fuck... *off.*' And everybody feels what it means, nobody can write it down. There is no English equivalent for 'fuck off,' because... it *is* English, 'fuck off.' You know? And English expressions don't have English equivalents, they fuckin' *are*, ya know?

~ Billy Connoly

when someone is being bothered by another person and is starting to get really pissed off and wants them to just go away or shut up

An exclamation of anger.

This is distinct from the imperative "Fuck off!" You try to say it as one word with the emphasis on the "fuck". This word has a couple of uses in Australia:

1. To qualify an adjective, if something is REALLY big or REALLY brightly coloured, for example, then you slide "fuck-off" in somewhere. This is also used in the UK and is seen in the movie Lock Stock and Two Smoking Barrels: "Also, I think knives are a good idea. Big, fuck-off shiny ones."

2. Another term for insect repellent.

1. Used in the imperative as a signal of angry dismissal.
2. To spend time idly.
3. To masturbate.