Definition

An exclamation of triumph, excitement, or emphatic conclusion to an action, often deployed after scoring in a game or making a mic-drop-worthy point. It's the verbal equivalent of a fist pump, suitable for both victories and ironic defeats.

Example Usage

I just parallel parked on the first try—boom! That's how it's done.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=boom&defid=19340)