A man or woman that is very hairy- does not shave. A very dirty person, often looks like some unsanitary creature that hides in the forest. It is used as an insult.
Dude 1: Eww, is that a man or a woman ?
Dude 2: It's a woman..
Dude 1: ........But they have a beard and chest hair..
Dude 2: They're just a rag squirrel.