Standing around pretending/imagining that you are doing something, when you are actually not.
(At a car wash)
Guy1: Why is he taking so long to wash my car?
Guy2: He's just standing there
with the windex in his hand.
Guy1: Let me ask him.
Guy1: What are you doing?
Duckbiller: I'm doing your windows!
Guy 2: Why, he's just duckbilling!