A nerf herder, also spelled "nerf-herder" or "nerfherder", was someone who herded nerfs on various planets throughout the galaxy. As it was solely an occupation for lower-class beings, the term "nerf herder" became an insult used throughout the galaxy. Nerf herders were often somewhat simple, but as a result of living outdoors and fighting off anything that interfered with their herds, they became quite capable.

Scruffy Nerfherder[starwars.wikia.com]