When you are taking a dump in your employer's executive restroom "bowel movement" and one of the 1% people try to open the stall door. You scream "Occupied!" You then stay in there for an extended period of time to disrupt them from tying to do their "business."
I was in the executive restroom taking a dump at work when the CEO tried to open the door. I screamed "Occupied." Then I stayed in there for like 2 days to prove my point. It was my Occupy Movement protest.