The idiom "rip off" means to take advantage of someone or something by using deception, fraud, or exploitation. It can also mean to imitate or copy someone else's work or ideas without giving them proper credit.

The idiom "when in Rome, do as the Romans" means to follow the customs, traditions, or behavior of a particular place or culture when you are there. It suggests that one should adapt to the local norms and avoid imposing their own values or ways on others.

The idiom "in the meantime" is used to indicate that something is happening or will happen in the present moment, while waiting for another event or situation to occur.

The idiom "pull a rabbit out of the hat" means to perform an unexpected or surprising action, especially one that requires skill or talent. It can also refer to a sudden or unpredictable event or development.

The idiom "on the case" means to be actively investigating or working on something, usually to solve a problem or find information. It can also refer to someone who is experienced and competent at their job or task.