A skank, but smaller. Generally, skankies are under (or appear to be under) the age of 16. They are well known for short skirts, Ugg boots, and obscene amounts of liberally applied facial makeup.
"Dude, I went to the Commons last night...skankies everywhere!"
"Yeah, Martin's sister is such a skankie. I swear I saw her ass popping out of that skirt. It was gross."