Related Clues:

• Snoopy's imprecation — vermin
• Pied Piper followers
• "Dang it!"
• Lab-maze solvers
• What Charlie Brown says when he's mad
• Laboratory maze critters
• Hamelin pests
• Pied Piper's pack
• Winston's biggest fear in '1984'
• 'Phooey'
• Willard's pals
• 'Crud!'
• Exclamation of frustration
• "That didn't go well"
• 'Foiled!'