The idiom "icing on the cake" means something that is an added bonus or a pleasant surprise, often making the original situation even better. It can also mean a small amount of something that makes a significant difference, like adding sugar to a dish.

The idiom "blue-collar" refers to a person who works in physical labor or manual occupation, typically characterized by wearing blue-colored clothing.

The idiom "a bird in the hand is worth two in the bush" means that it's better to have something certain or tangible, even if it may be less valuable, than to risk losing it all for something potentially better but uncertain.

The idiom "have no business" means that someone or something has no right, authority, or reason to interfere in a particular matter. It suggests that the person or thing is not qualified or experienced enough to have any input or decision-making power in that matter.

The idiom "look before you leap" is a piece of advice that means one should carefully consider the potential consequences or risks of an action before deciding to take it. It encourages caution and delay, rather than rushing into something without fully understanding the implications.