Place it at the end of a Roblox fail, right after the action that causes the death, then follow it with the classic Roblox Oof for a before-and-after contrast that viewers recognise instantly.
About this sound
This is Roblox's short 2022 death sound, a roughly two-second effect that plays when a character dies in the game. It feels abrupt and a little comic, turning a sudden defeat into a quick punchline rather than a dramatic moment. It comes from Roblox, where it replaced the game's much older death noise.