A Mother-in-law (n.) is one for whom there's nothing easier to find than fault, and nothing harder to keep than still.
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A Mother-in-law (n.) is an arbitrator who always favors one side in a dispute.
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A Mother-in-law (n.) is the matrimonial kin that gets under your skin.
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A Mother-in-law (n.) is the only law under which you are assumed to be guilty until proved innocent.
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A Mother-in-law (n.) is the only thing that talks louder than money.