Little is documented about the original recording behind Isaimalai Naanaya, so the clip circulates mainly as a standalone soundboard and meme audio rather than as part of a widely identified film or show. Its short length and clear single-phrase delivery helped it spread through shares, reposts and chat forwards, where context is added by the video or message around it. Creators reuse it as a flexible reaction line for jokes, surprises and playful call-outs, which keeps the sound recognisable even without a confirmed source.