The phrase true damage comes from game combat systems where that damage type bypasses defenses, which is why players use it as shorthand for unstoppable power. One hundred thousand pushes the number far beyond a normal hit, making it a natural meme exaggeration for clips, streams and edits shared online. It spread as a reaction to broken builds, lucky crits and boss melts, and it stays useful because the joke needs no setup. Anyone who plays damage focused games understands the brag instantly, even without knowing the original clip.