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Dead Moose is a form of horseplay usually participated in by a group of men. The term was made famous by the Eminem line:
"Sometimes I wanna get on TV and just let loose/But can't, but it's cool for Tom Green to hump a dead moose"
which references actor Tom Green humping a dead moose on MTV.

The game starts when one member of a group places their thumbs on their temples and stretches out their fingers, resembling a moose's antlers. The rest of the group follows suit and the last one to do so becomes the dead moose. The dead moose must immediately lie still on the ground, while the rest of the group dry humps them with vigour. The game is over when the humpers decide that the dead moose has been defiled enough.
Person 1: *Makes moose antlers with their hands*
Person 2: *Makes moose antlers with their hands*
Person 3: *Makes moose antlers with their hands*
Person 4:*Makes moose antlers with their hands*
Person 5: *Doesn't realize*
Person 1: DEAD MOOSE!
Person 5: *Lies still on the ground*
Person 1: *Proceeds to hump Person 5*
Person 2: *Proceeds to hump Person 5*
Person 3: *Proceeds to hump Person 5*
Person 4: *Proceeds to hump Person 5*
Person 3: Alright enough, we've been preponderated enough. The moose has been penetrated.
via giphy
by YeastYeastBoi June 11, 2018
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A person that would seem like they would be great in bed, only to disappoint when the time comes by laying around and being utterly inactive.
Kate: So Rachel, how was Jimmy last night?
Rachel: Oh don't even get me started on that dead moose.
by skill3t December 20, 2014
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