Chicken-shit. Flimsy, trivial, petty, cowardly. Gallinascat comes from gallina- meaning Chicken, and -Scat meaning feces. Used in polite conversation and writing to mean chickenshit, and is thus almost a chickenshit way of writing chicken-shit.

When someone thinks they are the main character of their life. Usually comes with a side of individuality complex, quirky style and a self centered point of view.