Common English idiom: Piece of cake - Meaning: Something that is easy to do. This idiom compares the simplicity of a task to the ease of eating a piece of cake. When someone refers to a task or activity as a "piece of cake," they are emphasizing that it is not difficult and can be easily achieved. - Origin: The origin of the phrase is not entirely clear, but it is believed to have originated in the United States in the early 20th century. The idiom might have been inspired by the idea that consuming a piece of cake is a simple and enjoyable task, analogous to completing an easy job. - Sample sentences: 1. Setting up the new software on your computer should be a piece of cake – just follow the installation wizard, and you'll be done in no time. 2. I was worried about the math exam, but it turned out to be a piece of cake. I finished it much earlier than I expected.