Baker's dozen

Meaning

Thirteen of something, usually given as a little extra.

Usage

Used when someone gives or expects a little more than promised.

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.

Medieval bakers added an extra item to avoid penalties for selling short weight.

English guild laws from the 13th century encouraged this practice to keep customers satisfied.