The idiom "go down like a lead balloon" means to fail or collapse suddenly and spectacularly. It's often used to describe an event that was highly anticipated but ended up being a disappointment.

The idiom "go by the book" means to follow the rules or regulations strictly, without any deviation or flexibility. It also suggests that someone is not only following the written text but is also interpreting it correctly and applying it in practice.

The idiom "cut your coat according to your cloth" means that you should behave or act in a way that is appropriate to your situation or status. It suggests that one should not try to be something they are not, or assume a higher position than what they deserve.

The idiom "Mr Right" and "Ms Right" refers to a person who is considered perfect for someone else. This means that they have all the qualities that someone desires in a partner, such as kindness, intelligence, and good looks.

The idiom "bundle up" means to gather someone or something together and protect them from the cold or bad weather by providing additional clothing layers, often in the form of blankets or insulation.