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Region: US | Usage example: He guards that information tighter than a bull's butt at fly-time.

Tighter than a bull's butt at fly-time

Meaning

Extremely tight, stingy, or uncomfortable.

Usage

Describes stinginess or extreme tension.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Southern farmers described bulls clamping down when flies buzzed.

Recorded in rural American speech in the mid-20th century.