Region: US | Usage example: She said she didn't give a tinker's damn about the rumors.

I don't give a tinker's damn

Meaning

I do not care at all.

Expresses dismissal of criticism or gossip.

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

Tinkers repaired pots with melted metal called a damn; the phrase meant even a tinker would not bother.

Appeared in 19th-century American slang and stuck in tough talk.