Place it near the end of a short anime edit, after a tense face-off, then follow it with JoJo To Be Continued to close the joke. For a stronger build-up, open with Za Warudo Time Stop before the reveal, so the dramatic lead-in makes the switch hit harder.
About this sound
This is a short Japanese voice line, about four seconds long, delivering the phrase 'Kona Banana' in a cheerful, abrupt tone that sounds intentionally silly. It feels absurd and playful, turning a solemn mood silly in an instant. It circulates as a Death Note meme tied to Yagami Light fan edits, where the unexpected line undercuts the character's serious image.