No need for hints or O's.
"When weighty matters are in debate, Mithrandir, I wonder a little that you should play with your toys of fire and smoke, while others are in earnest speech."
- Saruman to Gandalf at the White Council, annoyed by Gandalf's smoking pipeweed.
(IIRC my first ever post on the Downs was about this scene - oh the nostalgia!)