adj. n. Used in a context to show a simple pleasure in something, usually associated with a slight shrug of the shoulders, an easy shaking of the head, squinting of the eyes, and a ridiculously large, joyous smile.
"Man, those fireworks are so zabby!" "Man, those fireworks are full of zabbiness."
"Have you ever seen Paul Newman hoseback riding really fast in the old west? He is the epitome of zabbiness on horseback."