In the sport Disc Golf (Frisbee Golf) you shoot a plastic disc to a basket. Flat, hill, forest,ect. any type of terrain. Occasionally your disc will hit a tree, and sometimes if not most, it will hit a big branch poking out of the side of the tree. That is a Moose Cock. A big leafless tree branch.
I almost made it through those trees, but that moose cock knocked my disc down.