Crappy, shitty, ghetto, low-class, cheap, dirty (when describing a woman)
"Cuerne" comes from the word "Cuernavaca" which is a the name of a street in a low-class suburb of Austin, Texas.
"Man that is one cuerne looking car!"
"Chris is fucking Shannon now? Man, she's such a Cuerne bitch!"
"I got to cuerne-rig it so the tires don't fall off"