Related Clues:

• Pocket protector wearer, in stereotypes
• Bully's victim, often
• Huge fan
• Shell kernel
• Difficult problem
• Studious sort, and proud of it
• Wrench target
• Brazil, e.g.
• 'Happy Days' put-down
• Bookworm, in stereotypes
• Aficionado, informally
• Giant fan
• Unlikely party animal
• Bonbon center
• Bolt connector