A person with red-hued hair. It can be more specific, but people with just reddish hair and no freckles and a tan can be called Ginger. The Ginger stereotype is that they have no souls and are cranky. Gingers are made fun of out of jealously, since, unlike blondes or brunettes, a ginger hair is not the color of piss or shit.
Brunette: Ha-Ha! Ur a soulless Ginger bastard!
Ginger: at least my hair ain't the color of shit!