Invention of the week: none emphasized
Uncle Cosmos urn arrives shortly before his ghost does--still with a pie plate on his head. Mr. Jennings is replaced with Mr. Jennings, a twin brother. Nick enters an Oreo stacking contest and Amy helps. Cosmo disrupts Waynes life. Cosmo feels its his duty to help each of the family members life.
Cosmo is likely a reference to Cosmo in Topper and Topper Returns.