The idiom "pour oil on troubled waters" means to make a situation worse by causing unnecessary drama or chaos. It suggests adding fuel to a fire or pouring more oil onto already turbulent waters, which can only worsen the situation.

The idiom "feather one's own nest" means to take care of oneself or one's own interests, usually by doing something that benefits oneself personally. It can also mean acting selfishly or putting oneself first, often at the expense of others.

The idiom "bang head against wall" means to hit one's head repeatedly against a wall or any hard surface in frustration, anger or desperation. It can also mean to encounter an obstacle or situation that is difficult to overcome or solve.

The idiom "up to no good" is used to describe someone or something that is causing trouble or behaving in a dishonest or malicious way. It can also be used to describe a situation or event that is not desirable or positive.

The idiom "come down with" means to fall ill or contract a disease. It can also mean to experience a sudden and severe emotional or physical shock, such as a heart attack or a panic attack.