The idiom "lie low" means to keep a low profile, or to remain hidden or discreet. It can also mean to avoid attracting attention or being noticed. For example, when someone is wanted by authorities or is in hiding from someone, they might lie low.

The idiom "never mind" is used to dismiss or ignore something that has just been said, usually because it is not relevant or important.

The idiom "big brother" refers to a person or organization that is watching over and monitoring others, usually in a way that is seen as oppressive or invasive. It can also refer to someone who takes on a protective role towards others.

The idiom "many hands make light work" means that if multiple people or resources are put together to accomplish a task, it becomes much easier and quicker to complete than if only one person or resource were involved.

The idiom "heart goes out to" means to have a deep feeling of sympathy, concern, or interest for someone or something. It is often used when someone experiences misfortune or hardship. The phrase can be seen as an expression of empathy and compassion towards the person in question.