Step 1: Create a diversion with a strategically-placed, yet tasteful, hairball.
Step 2: Misdirect the conversation with a well-timed, yet innocuous, comment.
Step 3: Employ the ancient art of the "Bait-and-Switch" to achieve your desired outcome.
For Further Study:
Advanced Tactics 2: The Weds Blues' Guide to Passive Aggression
Advanced Tactics 3: The Dark Art of Weds Blues' Psychology
Advanced Tactics 4: The Weds Blues' Guide to Manipulating Your In-Laws