A female of diminutive height, inappropriate dress and small intellectual capacity.
Tattoos, piercings, unnaturally bleached blonde hair and far too much makeup are all common features.
Skunchkins may enjoy getting drunk, music festivals, squealing, posting inordinate amounts of photos on Facebook, fashion trends, high heels to disguise their literal and figurative insignificance, and generally being annoying and vapid.
She has a tramp stamp? Well duh, she's a skunchkin.