Mayor Lewis' lucky purple shorts have a number of secrets.
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*Putting them in the Luau soup gets a unique response from the Governor and Lewis.
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*Putting them in the Stardew Valley Fair grange display disqualifies the player, and Lewis gives the player 750 star tokens as a bribe to keep his secret. Marnie also gives unique dialogue at the Fair after seeing the shorts in the display.
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*Tailoring them with a gold bar produces Trimmed Lucky Purple Shorts. These are equivalent to the Lucky Purple Shorts for completing the quest or triggering the other secrets, but can also be worn by the player for an amusing reaction from Marnie and Lewis.