Related Clues:

• Swinish sounds
• Sounds from a pen
• Sty sounds
• Farm squeals
• Porcine sounds
• Gratitude for slop?
• Sounds made when forgetting to lift with one's legs
• Pen pal chatter?
• Pen racket
• Sounds from the sty
• 'Old MacDonald Had a Farm' sounds
• Farmyard chorus
• See 'n Say sounds
• Pen plaints
• Acts like a pig?