A term used to descibe when canadians go crazy like a moose during springtime and have sex with anything in sight. Also know as mating-season sex.
Man- "Sheila was wild last night!"

Man 2- "Was it Moose Sex?"

Man- "Hell Yeah!"
by winona July 22, 2005
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When a girl makes a horrible face during sex resembling that of a moose

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- I had sex with that girl Alex oller and she makes the worst moose sex face

- I was about to nut until I seen that moose sex face
by the bandit75 April 4, 2014
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