The idiom "pour cold water on" means to ruin someone's plans or destroy their mood by introducing an unpleasant or unwanted element into the situation. It is used to express disappointment, frustration, or a desire for something more positive or agreeable.

The idiom "concern with" is used to describe a person or thing that is important to someone, or something that affects them. It can also refer to an interest or attention paid to a particular topic or issue.

The idiom "in the cahoots" means to be secretly or conspiratorially involved with someone or something, often to plan or scheme against others. It can also mean to be in a friendly or informal relationship with someone or something.

The idiom "quality time" refers to spending time with someone or doing something that is valued and appreciated by both parties. It suggests a level of attention, interest, and enjoyment that goes beyond the ordinary or mundane.

The idiom "caught between two stools" means to be in a difficult situation where one has to make an unpleasant choice, often because both options are equally undesirable or have negative consequences. It can also mean being stuck or trapped between two conflicting situations or ideas.