Possible Clues:

• Retaliation
• An eye for an eye
• Retaliation in kind
• Quid pro quo
• *Defiantly petty retaliation
• A blow in an attempt to achieve parity
• Bird in favour of tasteless jewellery gets a taste of her own medicine
• Retaliation in kind from tart, fit to burst
• Reciprocal exchange
• Equivalent given in return