Carl the Collector Episode 9 The Magic Collection/Listen Coach >Carl is distracted by his megaphone collection and is repeatedly told that he is not listening to others, frustrating him. After telling Sheldon, Carl realizes his difficulty in listening to others when distracted. Sheldon coaches Carl on listening, assisted by his mother and his cousin Brittany. Afterward, Carl demonstrates his listening skills with Arugula and Forrest, both of whom he had ignored previously.