The Northern Territory flag at the Mindil Beach Casino in Darwin is frequently flown upside down , according to an informant who regularly visits the premises. He has informed reception of this sin against vexillology , but returns from time to time to find the flag wrong way up. A flag flown upside down indicates a vessel in distress , which aptly describes the present CLP government. The former Chief Minister , Terry Mills , was forced to walk the plank when there was a mutiny in the ranks ; salty sailor oaths have been heard within the Wedding Cake .