I can provide information on the concept of a "baker's dozen."
A baker's dozen traditionally refers to a group of 13 items instead of the standard 12. The origin of this term dates back to historical times when bakers would give their customers an extra loaf of bread or bun to ensure fair trade and avoid being penalized for shortchanging customers. This practice was a way to guarantee that customers received the correct amount of goods and to build trust with their clientele.
Today, the term "baker's dozen" is sometimes used colloquially to describe a group of 13 items, usually in the context of baked goods like cookies, muffins, or bagels. While it's not a strict rule, some bakers may still choose to provide a baker's dozen as a nice gesture to customers.