In this deleted scene, Ron doesn’t like to joke with Ann.
Ann Perkins:
“Knock, knock.”
Ron Swanson:
“Knock, knock.”
Ann Perkins:
“You’re supposed to say who’s there.”
Ron Swanson:
“Knock, knock.”
Ann Perkins:
“Who’s there?”
Ron Swanson:
“Get out of my office.”