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NOUN: A message sent via text message, email, IM, blog, paper note, or telegram that strikes fear into one's heart or makes them want to wet their pants.
Joe: Dude, steve sent me a text message he said he was going to steal my pudding at lunch
Jim: Man thats scary...
Joe: I know it was a total terragram...
by Sir Sizzle August 20, 2007
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