Onomatopoeia used to symbolize the sound that the drummer would make in a stereotypical stand-up comedy routine. Traditionally, after the comedian delivers the punch line.
You know this man is a kind loving man. He's got a real soft spot for young, up-and-coming comedians...it's called his @$$h0Le! Badoom tsss!
(and you have to pantomimeplaying the drums.)
An onomatopoeia used in the video game "Sonic Blast Man II." The word is used similarly as "Boom", "Pow", or "Bam." The word was made somewhat well known by a YouTuber called "ProJared" who reviewed the game, and made fun of the word.