Go down a bomb
Definition 1 of 1
Pro Tip 1/3British Slang
It's an informal British phrase and not commonly understood outside the UK. 
I didn't know 'go down a bomb' was British slang until I used it in the US and got puzzled looks.
Pro Tip 2/3Positive Impact
It suggests something made a very good impression and was extremely effective. 
Your presentation went down a bomb with our clients!
Pro Tip 3/3Social Context
Use it in casual conversation or when talking about social events for the right tone. 
The DJ's set went down a bomb at the party last night!