The idiom "fair and square" refers to a situation or outcome that is just and reasonable, based on the rules and principles involved. It implies that everything has been done honestly and without any underhanded dealings or manipulation.

The idiom "arrive in a body" means to arrive physically, without any delay or problems. It is used to describe the arrival of a person or thing.

The idiom "hard and fast" generally means something that is done quickly, easily, or efficiently. It can also refer to a situation that is urgent or immediate.

The idiom "a burnt child dreads the fire" means that a person who has experienced a traumatic event or difficult situation may be reluctant to go through it again or approach similar situations in the future.

The idiom "up and about" means to be active or lively, to move around a lot, or to be out and about or engaged in various activities. It can also mean to be busy with work or to be energetic and spirited.