1.To watch something while hiding like a nigger in the bush 2. to be eye in the sky in a Game server. 3. To join a voice chat and not say nothing just to listen to others.
Nelson has been in here over a hour. And has said nothing he is a bushnigger. Also see Fly On The Wall
A dirty bush pig could also be described as an unclean human being that looks like they just came out of an extended camping trip where no water was available.
“Don’t be act like dirty bushpigs! Clean up after yourself! You look terrible! Have you been into the pills again?!