I don't give a tinker's damn
Meaning
I do not care at all.
Usage
Expresses dismissal of criticism or gossip.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
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.