Related Clues:

• ''I hate when that happens!''
• 'Aaargh!'
• ''Of all the luck!''
• 'Oh, phooey!'
• "Consarn it!"
• "Aw, heck!"
• "Gosh darn it!"
• Lab dwellers
• Sewer rodents
• Charlie Brown's "Darn!"
• Candidates for witness protection programs
• Traitors
• Unwanted tenants
• Urban vermin
• Kid-friendly oath