What is the origin of the idiom "go down a bomb" and when to use it?

The origin of this idiom is believed to have originated in the 1940s during World War II, when British soldiers used the phrase to describe the successful bombing of a target. Over time, the phrase began to be used more widely to describe any situation that was highly successful or well-received. The idiom implies that something is extremely popular or successful and is well-received by an audience. It is often used to describe a particular event, performance, or product that is highly enjoyable or entertaining.