usually defined as a hungry girl with a very hairy upperlip
"eww i would never want to be encountered with an insia"
by lollipoplollikol April 11, 2010
a trustworthy person who is also creative and unique.
i can trust an insia.
by damiendame23 July 27, 2011
Sly, social climbers who make friends only to advance themselves, will entice boys to buy them expensive presents & trips which they will pay for with sex. Persons with uninteresting opinions, they repeat other peoples' opinions as if their own. Usually infected. Identified by ghastly pimples on their chin. High propensity to walk and sit with legs apart. Lacklustre, bitchy & untrustworthy. Will have intercourse for money.
Kim Kardashian is such an insia.
by Lollipopguild May 27, 2013

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