J.K. Rowling's fifth novel, Harry Potter and the Order of the Phoenix. Popular shorthand amongst bloggers.
"Did you read my blog last night about OotP?"
"Nooo! I haven't read it yet, and I don't want to read any spoilers before then!"
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Acronym for the popular baseball simulation game, Out of the Park (Baseball) put out by Sports Interactive.
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Out of Toilet Paper
Guy 1: Dude! I'm OOTP! Toss me a roll!
Guy 2: *hiding a roll* That sucks, I just finished my roll.
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