You only have two moods: winter (sad) and summer (happy).
It can be challenging navigating the spectrum of all possible human emotions. Quite time consuming even, all that working out how you’re really feeling. True Berliners have simplified down all that emotional complexity to just two basic binary moods: happy and sad. Sad occurs during the horrible, long Berlin winter, in which we all struggle to remember, why did we move here? Happy occurs during summer, when everything is just damn peachy.