Green’s Dictionary of Slang

1. an imaginary place that is a byword for backwardness and remoteness.

1897		Caulfield and Elsternwick Leader (North Brighton, Vic.) 4 Dec. 3/4: Everyone declared the day’s outing had been thoroughly enjoyable, and the next place to be visited is Woopwoop.
1917		Argus (Melbourne) 24 Jan. 9/6: The questions of ‘Subscriber’ (Geelong) and ‘Numbscull’ (Woop Woop), will be answered in ‘The Australian.’ .
1926		J. Doone Timely Tips For New Australians 23: WOOP WOOP. — A humorous method of alluding to the country districts.
1944		L. Glassop We Were the Rats 51: I didden come down in the last shower. Where d’ya think I come from? Woop Woop?
1957		J. Greenway ‘Australian Cattle Lingo’ in AS XXXIII:3 169: woop woop, n. phr. A mythical town deepest in the outback; an extremely small, isolated, and lonely ‘Podunk.’.
1963–74		B. Humphries Barry McKenzie [comic strip] in Complete Barry McKenzie (1988) 32: We’re way out to Woop-Woop here.
1968		G. Slatter Pagan Game (1969) 80: The cocksure boys from tinpot towns in the woop woops.
1972		A. Chipper Aussie Swearers Guide 34: When’d they let the cockies outa Woop Woop goal?
1972		G.W. Turner Eng. Lang. in Aus. and N.Z. 108: Out in the sticks, the tea tree, the cactus or the woop-woops [...] are current in Australia as well.
1978		L.K. Truscott IV Dress Gray (1979) 297: They start resigning like some kind of an epidemic hit, like the last train is pulling out of Woo Poo.
1986		R. Beckett Dinkum Aussie Dict. 57: The Back of Beyond or Woop Woop. In areas such as these the crows are forced to fly backwards to keep the dust out of their eyes.
1998		Woroni (Canberra, ACT) 1 Sept. 28/1: Welcome to Woop Woop. Teddy a cockatoo smuggler, leaves America and somehow ends up in Woop Woop, Australia (don’t bother finding this on the map).
2004		Tharunka (Kensington, NSW) 10/3: Like, do you know any guy who would drive a girl home from the City to Woop Woop?
2018		R. O’Neill ‘Ocker’ in The Drover’s Wives (2019) 180: So out near Woop Woop, there’s this bodgy two-room place in the scrub.
2020		G. Disher Consolation 32: ‘For all I know he’s in Outer Woop Woop’.
2022		D. Andrew Aussie Sl. 12: Whoop Whoop General term for somewhere too far to travel to.

2. an unsophisticated rural person.

1936

(con. 1830s–60s) ‘Miles Franklin’ All That Swagger 395: I’m sick of so many blobs and woop-woops for relations.