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2.
The act of having sexual anal intercourse with a female doggystyle, then after giving a hidden friend in a closet a pre-determined signal , putting your hands up on your heads like moose antlers as he pops out and snaps a photo
Dude i totally gave that bitch The Dirty Moose and tom got it on film! Want to see the picture?
by Gujmach August 03, 2009
 
1.
When doing someone from behind you throw some dirt on them and then give them antlers with your hands. Then make a low pitched groan like a moose call.
Guy 1: I heard that Fred got the dirty moose from Kevin the other day.
Guy 2: Wow, Queers.
by Austinnn August 05, 2007