Green’s Dictionary of Slang

(Aus.) a large stain on a garment (see also next).

1904

Sydney Sportsman (Surry Hills, NSW) 21 Dec. 3/3: His pants are sadly damaged; there’s a large and dirty spot. / Like a map of all Australia, in his rear.

a semen stain on a sheet, or occas. a garment; also of gonhorreal pus (see cite 1830).

[1830		Whore’s Catechism [trans.] 89: She ought [...] to cast an inquisitive eye at his shirt, in order to see if there are any indications of a geographical chart on it].
[1860		R.S. Surtees Plain or Ringlets? (1926) 303: The Hydropathic gentleman used to sluice his patients in the bed-room above, and a continuous flow of drippings had expanded into a large map of Europe on the ceiling].
1922		‘J.H. Ross’ Mint (1955) 96: Lofty [...] paraded with his sheet before each of us, triumphanly showing its traces of wet dreams. ‘This top one [...] is the dead spit of a map of Ireland.’.
1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: map of Africa n. The unfortunate stain left on the bed sheet and often the mattress below after a sexual exchange of bodily fluids.
1998		P. McCabe Breakfast on Pluto 28: She lay there on the table with the small moist map forming on her housecoat.
2013		K. Shea ‘Having Chiqui’ in ThugLit July-Aug. [ebook] Muzz was premature and blew a big sloppy map of Hawaii all over Chiqui’s black leather skirt.

(Aus.) the female genitals and pubic hair.

1980		M. Bail Homesickness (1999) 41: Violet sat on the edge of the bed naked, filing her nails: calcium powder drifted onto her moist Tasmania.
1985		B. Humphries Traveller’s Tool 15: She’s got her feet on the desk, affording me a ring-side view of the map of Tasmania.
1993		B. Moore Lex. of Cadet Lang. 224: map of Tasmania the female genitals, especially the area demarcated by the pubic hair [...] Also (more commonly) known as the map of Tassie.
1997		Roger’s Profanisaurus in Viz 87 Dec. n.p.: mapatasi (ma-pa-ta-zee) euph. Aus. Minge. As in: ‘Show us yer mapatasi, Sheila’. abbr. Map of Tasmania From the similarity in shape of said island to a muff.
1998		R.G. Barrett Goodoo Goodoo 92: The last one in had just about lost the bottom half of her bikini revealing the biggest, hairiest map of Tasmania Les could ever remember seeing.
2000		Indep. Rev. 2 Aug. 5: Her body, her voice, her walk, her bosom, her Agent Provocateur undies, her map of Tasmania and her errant ex-husband.
2000		R.G. Barrett Leaving Bondi (2013) [ebook] [H]er skirt had crept up considerably, giving Les an eagle’s eye view of Blythe’s sweet little map of Tasmania beneath her lace knickers.
2001		OnLine Dict. of Playground Sl. 🌐 Map-o’-Tassie n. Womens pubic hair. Due to a strange quirk of fate, Tasmania looks exactly the same shape as the area of a womans untrimmed pubic hair.
2002		nakedstars.com.au 🌐 Beaut Brunette Sheila Flashes Her magnificent Big Tits — Cute Little Map of Tassie but those Nungers, wow!
2017		T. Spicer Good Girl Stripped Bare 22: A floor manager is joking with a camerman about glimpsing a dancer’s ‘map of Tassie’.