In a blaze of glory phrase
If you do something or something happens in a blaze of glory, you do it or it happens in an extraordinary and impressive manner.
He wants to end his boxing career in a blaze of glory by knocking out his opponent.
The concert ended in a blaze of glory with an epic dance performance.
The plan will succeed in a blaze of glory.
1. If you knock someone cold, you knock them unconscious.
2. If you knock someone cold, you greatly impress someone.
This phrase is formed based on the meaning of the noun "blaze" and "glory"
a joke, idea, or suggestion falls flat, meaning that it does not achieve the intended effect.
My attempts at jokes fell flat.