Top Definition
Acronym meaning "I Need Some Poon!"
This is an allusion to the movie 40 Year Old Virgin, where actor Steve Carrell talks about his need to have sex with a woman and thus get some poon (vagina).
Me - "Man, I broke up with my girlfriend two weeks ago...INSP!"

Friend - "Me too."
by Chingon Ese October 25, 2006

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