The idiom "food for thought" refers to something that provides deep reflection or contemplation, usually a topic or idea that sparks discussion or debate. It can also refer to information that is useful or relevant, but not necessarily pleasant or enjoyable to consider.

The idiom "a little of what you fancy does you good" means that it's okay to indulge in something that you enjoy occasionally. It suggests that doing so can have a positive impact on your overall well-being.

The idiom "so and so" is used to refer to a person or thing without using their name directly. It is typically used as a placeholder until the specific name is known or in cases where it is deemed inappropriate or disrespectful to use their name.

The idiom "there's no place like home" means that there is nothing quite like being in one's own home, with familiar surroundings and loved ones. It suggests a sense of comfort, safety, and belonging that is difficult to replicate elsewhere.

The "ugly duckling" is an idiom that refers to someone who appears to be unattractive or unpleasant, but turns out to be more attractive than expected. It is often used to describe a person's initial appearance or behavior.