OSSI
Ossi is an informal name for citizens of the (former) German Democratic Republic (East Germany), especially since reunification. It is derived from the German word ost, which means east. The equivalent for (former) West Germans is Wessi, which is derived from the word west. Both terms are considered disparaging by some, their existence has been interpreted as being a reflection of the differences in the cultures and mentality of the old East Germany and old West Germany. Most Germans consider them to be just an adjective/informal way to quickly differentiate between the two entities that form Germany today and came from reunification, when the terms were first used.