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Acronym for I Pulled It Directly Out Of My Ass. Used frequently in the business world (OK, maybe not so frequently). Indicates that little thought went into providing an answer, etc. Similar to swag, Scientific Wild Ass Guess.
Boss: "This estimate is way off, how did you come up with it?"

Lackey: "IPIDOOMA!!"

TV Viewer: "This show is stupid, how did you come up with the plot?"

TV Executive: "IPIDOOMA!!"
by The Angry React November 03, 2007
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