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This is used when someone asks a very important question. It is the use of a question mark and an exclamation point.
Mary, are you pregnant?!
No but that was a good use of a Questimation Mark.
by teeners16 November 02, 2010
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2
The punctuation mark in which there is one or more question marks followed by one or more exclamation points. Usually used for emphasis.
Usage of Questimation Mark:

-- WTF?!?!?!

-- OMG REALLY????!!!!!????!!!
by What's-her-face! December 30, 2010
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