The scenes with experiments on the young boy that involved tests of motherly wisdom (ie, you can catch your death of cold, don't go swimming after eating, etc.) were actually filmed during season 1. The intent was to build an episode around Mom Myths but the writers could not pull together enough material to fill an episode. The scenes were saved and eventually incorporated into Season 6's Stranger Danger.
Denmark: August 18, 2008 on TV3