Related Clues:

• Cousin of a squeal
• Gratitude for slop?
• ... a porker
• Bit of porcine patter
• Pen pal chatter?
• Pen racket
• 'Old MacDonald' noise
• Sounds from the sty
• "Old MacDonald" noise
• 'Old MacDonald Had a Farm' sounds
• Make like a pig
• Boarish comment
• Sty squeal
• Farmyard chorus
• See 'n Say sounds