Actually defined as a member of a despised social class, a commoner, a member of the plebs of ancient Rome. Also low-born, undisinguished, vulgar, and my personal favourite: vulgar-looking.
Other words with similar meaning: Scrut, Townie, Kappa-Slapper, Rude-Boi, Scum, Greb, Scav, &c.
What's red and orange and looks good on Plebs? ... Fire!