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Leverage, says you. I think I feel a change in the wind, says I.
— Mr. Gibbs · Pirates of the Caribbean: The Curse of the Black Pearl

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker answers talk of leverage with a feeling that the wind is changing. The repeated 'says you' and 'says I' set two ways of describing the situation against each other. One reading hears a playful suggestion that circumstances may be shifting beyond a simple bargaining advantage.
Context reviewed