Foot in mouth
Meaning
Say something embarrassing or inappropriate.
Usage
Describe verbal blunders.
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.
Metaphor for saying things better left unsaid.
20th-century slang used in newspapers and comedy.