It actually originates from a stew or casserole which people from Liverpool used to eat!! they used to keep a big pot on the stove when they were poor, and during the week all the leftovers were added to the pot and they would eat it at weekend...this stew was known as scouse!!
Scouse: Spiegl refers to this dish with a pun: pot-au-feu l'hiver poule. The word comes from lobscouse, a sailor's (very likely a Norwegian sailor) dish of stewed meat, vegetables, and ship's biscuit, not unlike Irish stew. Lobscouser became a slang name for a sailor. As a port city, Liverpool became known for this dish. The word Scouser came to refer to a native of Liverpool, the city where they ate scouse, and Scouse referred also to the pronunciations and usages of that speech community. Debates about details continue, but some of the details are fascinating, for instance the fact that in Norway today Lapp Skews (not all that far from labscouse) are stewed strips of reindeer meat.
Can some one tell me if there is a better "definition" of a Scouser?
S is for Sardonic sense of humour
C is for Comedian born and Bred
O is for Only supports one soccer team (but has two to choose from!)
U is for Unswerving love for all things Liverpool
S is for Scouse eater
E is for Eulogizes Liverpool at every opportunity
R is for Rejoices in a good argument
Merriam-Webster Dictionary: Scous*er (noun) First appeared 1959: a native or inhabitant of Liverpool, England.