Possible Clues:

• Untidy type requiring brush? About right
• Untidy person with a bit of a neck
• Tramp showing bit of neck?
• Untidy chap has to scrape round bottom of jar
• Bit of neck, or bum?
• Untidy chap
• Untidy person - nape of neck
• One hardly washing the back of the neck
• Part of neck - namely, over frilly collar
• Back of the neck, used to lift cat