As a word, nonillion names an extremely large number, one followed by thirty zeros in the short scale used in modern English, which is why it works so well as comic exaggeration. Online, short clips built around single impressive words like this circulate as reaction sounds and meme edits, where the humour comes from applying formal mathematical language to everyday situations. Its brevity makes it easy to reuse across gaming videos, TikTok edits and reaction compilations, and the unfamiliar scale keeps the punchline surprising even after repeated listens.