Related Clues:

• You'll need to keep your head well down, Mother, by the sound of it, if you want that bit of paper
• Mass per unit volume
• Refuse to hold pose — demonstrating stupidity
• Compactness - stupidity
• Stupidity of trying to alter destiny?
• Sit surrounded by refuse - there's stupidity for you!
• Such obtuseness can be relative
• Mass/unit vol. (phys.)
• It's usually measured in grammes per cc
• Mass per volume
• Boozer's body found in squat, covered in refuse
• Studies something with unknown thickness
• Compactness, stupidity
• God holding new Sunday mass?
• Studies Italian with variable concentration