In sports betting, a moose is simply the equivalent of a poker bad beat – a bet that goes horribly wrong despite the fact that everything was progressing just as planned and the punter seemed to have the odds going in his favor.
However, please note that due to the significantly less competitive nature of sports betting, bettors usually don’t treat such unlucky situations as seriously as poker regulars.
“The outcome of last week’s match was the worst moose of my life. If you can come up with a scenario for a worse bad beat, then your mind works just like Jigsaw in the Saw movies.”
The origins of “moose” can be traced back to a joke posted on the prestigious covers.com sports betting forum.