Moose sex Share definition Flag 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!" Moose sex by winona August 13, 2005 0 0 Get merch Get the Moose sex mug. Buy Now — $32.95 See more merch