Related Clues:

• Unwanted rodents
• Quaint 'Oh, don't be silly!'
• 'Peanuts' expletive
• 'Darn it'
• Cry often made while snapping the fingers
• Squeals (with "on")
• "Curses!" to Charlie Brown
• See 24
• First word of 'The 21 19'
• Snoopy's imprecation — vermin
• Pied Piper followers
• "Dang it!"
• "Harrumph!"
• Lab-maze solvers
• What Charlie Brown says when he's mad