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The idiom "carry a tune" likely originates from the world of music and singing. To "carry a tune" means to be able to sing in tune, stay on key, and produce pleasing musical notes. This phrase has been in use for centuries, as music has always played an essential role in human culture and communication. This expression is used to describe someone's ability to sing in a way that is pleasing to the ear and stays in tune with the melody. It is often used in a positive context to compliment someone's singing skills.

The exact origin of the idiom "a fair shake" is uncertain, but it dates back several centuries and has roots in American English. It is believed to have originated in the 19th century as an expression used primarily in the United States. The term "shake" in this context refers to a fair and equal distribution or allocation of something. The phrase could have emerged from the idea of giving someone a fair chance by shaking hands as a symbol of agreement or fairness. It can be used in personal interactions, emphasizing the desire for equitable treatment or opportunities in relationships, friendships, or negotiations.

The exact origin of the idiom "go off the deep end" is uncertain, but it is believed to have originated in the early 20th century, possibly in the United States. This expression is often used to describe emotional breakdowns, sudden outbursts, or drastic decisions made without careful consideration. It can be applied to situations where individuals respond intensely to stress, frustration, or personal challenges, often crossing social or behavioral boundaries.

The origin of the idiom "not have a prayer" is uncertain, but it may be related to the idea of prayer as a form of supplication or appeal to a higher power for help or mercy. The phrase has been in use in English since at least the mid-20th century, and it has been applied to a wide range of situations, including personal and financial struggles, legal cases, and sports competitions. In general, the phrase is used to describe a situation where success is so unlikely that even divine intervention would not be enough to bring it about.

The idiom "through the wringer" originates from the process of using a wringer, a mechanical device used to squeeze excess water from clothing, typically after washing. In a figurative sense, this expression is used to describe the experience of going through a challenging or demanding situation, often leaving an individual exhausted, emotionally drained, or thoroughly tested.

The idiom "get a grip on oneself" comes from the literal meaning of gripping something firmly for support or stability. Its origins trace back to the need for sailors to physically "get a grip" on rails or ropes when ships rocked in rough seas so they could stand steady on deck during storms. It is typically used when someone has become overly emotional, irrational, panicked, or out of control in some way due to circumstances or events that have caused them psychological imbalance. It implies the need to regain composure and clear-headedness.