Nitty

Example of someone who attempts to clean themselves but fails. Often appear to have greasy hair infested with nits. Many people are aware of nitties as it is obvious from the constant head scratching. If you see one, run. Nitties are often similar to skets as they inherit similar qualities.

Person 1 : "That girl keeps scratching her head."

Person 2: "She is a nitty, stay away. Ew"