Related Clues:

• Pen output
• Piglet's sound
• Sty sound
• Porcine grunt
• Pigpen cry
• Pen pal's comment?
• Porcine sound
• Word from a pen pal?
• Word from the pen?
• Babe's greeting?
• Hoggish comment
• Pigpen plaint
• Porcine protest
• Sign of a pen problem?
• Barnyard cry