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1.
Aussie slang for the female genital area.

Contraction of "Map of Tasmania", Tasmania is a triangular shaped island south of Melbourne, which roughly equates to the shape of a hairy 70s style muff.
"Bloody Hell, Bruce. That Sheila's Mapatsi is hairier than a bear-trapper's hat."
by Noldone August 07, 2003
 
2.
Austraillian slang for a vagina.
Hey girl, let me see your mapatasi.
by asdf January 24, 2003