The idiom "twist of fate" refers to a surprising or unexpected turn of events that results in a favorable outcome for one person or group, while causing misfortune for another. It suggests that something unexpected has happened, and it may have been unforeseen or out of control.

The idiom "fall on deaf ears" means that something is ignored or paid no attention to, often because it is considered unimportant or inconsequential. It can also imply a lack of interest or a willful refusal to listen to someone's message or advice.

The idiom "drop a bombshell" refers to making an unexpected or significant announcement that has a profound impact on the listeners, usually causing shock or disbelief. It can also mean revealing confidential information or a surprise attack.

The idiom "set off" is used to describe an action or event that occurs as a result of another action or event. It can be used to describe both literal and metaphorical situations. In a literal sense, it means that something causes an explosion, fire, or other violent act.

The idiom "sleep tight" is used to wish someone a good night's sleep. It implies that the person will have a restful and peaceful night, without any disturbances or worries. The phrase can also be used to express confidence in someone's ability to stay safe during the night.