Possible Clues:

• Short witty poem
• Witty remark produced by detective taken in by outrageous gamer
• Brief, clever and memorable statement
• Pithy remark
• Proverb close to these two animals
• Recollection of horse eating pork — is that witty?
• Witty words from English farm animals
• Short witty poem or saying
• The truth is rarely pure and never simple, say
• Farmyard animals forming the basis of English saying