Colloquial term referring to a moose. Moose often browse in swamps and marshes, eating the tender water plants, hence the swamp reference.
The donkey part comes from the fact that they are an animal that is both tough and stubborn.
The man was well-prepared to spend a day in the forest, as he was confident that he would get to photograph a swamp donkey in its natural habitat.
a dumbskeezer who gets drunk as shit all the time and tries to get as much dick as possible. stay away from swamp donkeys or u will get diseases on ur johnson.
Pretty much the equivalent of any girl that walks onto the set of "Jerry Springer". A woman who wears clothes that are 3 times too small,smells like she lives in a swamp, speaks like a dero and looks like a fat-ass donkey turd.