Slang for a fourfold vibrator. Often used in connection with a sexual act called Canada's History.
Girl 1:
Did you manage to clean your Moose Antlers? After studying Canada's History last week they were a sticky mess!

Girl 2: I got rid of most of the maple syrup by hand, but after putting them in the dishwasher they now are as good as new.
by LittleStevieC February 6, 2010
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A predator who has a run in with a moose antler. Communities and playgrounds are safer after this interaction.
The police department posted that another MAAP- Moose Antler Attracted Person is going to be living 4 blocks away from an elementary school.
by Gerswon Miahjere March 15, 2023
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While in the missionary position, the man uses his arms to move her knees to her chest and her feet around her ears giving the appearance of the woman having moose antlers
So I was balls deep in this chick and gave her the ol’ Moose Antlers
by Jmoney$$$$$$$$ May 18, 2019
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