The idiom "slip of the tongue" refers to an unintentional mistake or error in speech, often caused by nervousness, excitement, or distraction. It can also refer to a statement that was not meant to be taken seriously or a false statement made out of carelessness.

The idiom "a watched pot never boils" means that when you are constantly monitoring or observing something, it seems to take forever to happen or develop.

The idiom "no man is an island" means that people cannot exist or thrive in isolation from others. It emphasizes the importance of social interaction, support, and community in our lives.

The idiom "de facto" means "in practice or actuality" or "in effect, although not officially recognized." It refers to a situation where something is happening or being done even though it may not be legally binding or official.

The idiom "feather in your cap" is used to describe a small accomplishment or success that makes someone feel proud or happy. It can also refer to an achievement that has added value to one's reputation or standing in the community.