The idiom "a tall order" means a difficult or challenging task that requires a great deal of effort to accomplish. It often refers to something that is too big or overwhelming to handle, especially when it comes to personal or emotional matters.

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.

"Push the boat out" is an idiom that means to go all out, put forth a great effort, or do something as fully as possible. It can also mean to take risks or try something new.

The idiom "big gun" refers to a person who is highly skilled, experienced, or knowledgeable in their field. This term can also be used to describe someone who has influence or power within an organization or community.

"All day long" is an idiom that means for the entire duration of a day. It can be used to describe activities, events or situations that last throughout the day or occur repeatedly during the day. The phrase is often used to emphasize the extent of time that something takes place.