In the study group's third year at Greendale, Annie, Troy and Abed were apartment fumigated and had to find temporary alternate living quarters. Troy and Abed planned on building a pillow fort at school to stay at which didn't work out as planned. They then decided to stay in the study room where they had their bunk bed moved. Dean Pelton didn't object to their living conditions and even brought them warm milk before bedtime. Shirley was there at one point and witnessed Pelton sing Troy and Abed a lullaby to put them to sleep. The "Dean's lullaby" was first heard in the Season Three episode "Basic Lupine Urology".