go down a bomb
To have great success. Primarily heard in UK. Oh, your plan is going down a bomb—she has no idea that you plan to propose tonight.
go down a bomb
be very well received. British informal This phrase is especially used of entertainment and in this context is the opposite of go down like a lead balloon (see lead).
go down a ˈbomb
, go (like) a ˈbomb
(British English) be very successful: Our performance went down a bomb.The party was really going (like) a bomb. OPPOSITE: go down like a lead balloon