Possible Clues:

• Self-denial?
• "It wasn't me!"
• "Me? Uh-uh!"
• "The Little Red Hen" denial
• "The Little Red Hen" reply (2 words)
• "It isn't me!"
• Frequent comeback to the Little Red Hen
• 'Don't count on me'
• Words claiming innocence
• Negative reply to 'Who did this?'