A sense of humor refers to one's ability to perceive, understand, appreciate, and express comedy or humor. It is a person's perspective on finding things funny or amusing and their willingness to share or participate in humorous situations.

"Bitter medicine" is an idiom that refers to something unpleasant or difficult that must be done or experienced, even though it is not desired. It can also refer to a message or situation that is unpleasant or difficult to hear, but is necessary for the person or people involved.

The idiom "read the riot act" means to scold someone severely, usually for something they have done wrong or for breaking a rule. It is often used when a person's behavior has been disruptive or disruptive to others.

The idiom "treasure trove" is used to describe something valuable or worthwhile that has been discovered or found unexpectedly. It can also refer to a large quantity of something that is useful, interesting, or entertaining.

The idiom "run out of steam" means to lose energy, enthusiasm or motivation. It can also mean that something has run out of its allotted time or has been exhausted.