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A term popularised by Chris Kamara of Sky Sports News in the UK. It is used when in shock as though something is above unbelievable or near impossible
Jeff Stelling: "and we have a goal, Chris Kamara what's happening?"

Chris Kamara: "Emile Heskey has actually scored, and what a shot from outside the area, UNBELIEVABLE JEFF"
by Christinction May 28, 2013
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