I don't know how it's used elswhere, but here it's pretty common.
Sometimes directed at someone in the extremely negative way you might imagine,
but like other swear words it's often just dumped randomly in a sentence as a kind of intensifier.
In NZ the 'blue-collar workers' are aspecially keen on it
and men will use it as a kind of positive descriptor/enearment for other
men- "he's a good XXX"
(and I say men on purpose-it's virtually never directed at or spoken by women. If it is, it's
always really nasty.
Now I find that pretty interesting
A bit offtopic... I studied English Literature,and Chaucer was
rather fond of 'queynte'
I'm sure I didn't know he was punning (queynte means “a clever or curious device or ornament” in Middle English)
and thought it was a totally acceptable word back then.
It was most probably more acceptable than now, but...