"In limbo" is an idiom that means a situation or person is neither here nor there, in a state of uncertainty or stasis. It can refer to anything from a legal case to an individual's emotional state.

The idiom "playing second fiddle" means to be relegated to a supporting role or position of inferiority, often behind someone else who is more important or successful.

"In for a penny, in for a pound" is an idiom that means to go all the way or take the full risk if you're already invested in something or involved in a situation.

The idiom "son of a gun" is commonly used as an exclamation to express surprise, astonishment or shock. It's often used when something unexpected happens or when someone behaves in a way that is considered unacceptable or abhorrent.

The idiom "bigger fish to fry" is a common phrase used to indicate that there are more important or pressing matters to attend to. It can also be used to dismiss someone's concerns as trivial or unimportant compared to other things happening.