Little is reliably documented about the original recording behind Tubarão Leitoa, so its life online is defined more by sharing than by a confirmed source. The Portuguese phrase circulated as a short soundboard clip, where its strange animal pairing made it easy to remember and reuse. Creators adopted it for quick jokes in edits, chats and meme compilations, especially in Brazilian internet humor. Its continued use comes from that flexibility, as the clip works without context and signals a playful, absurd tone in just a few seconds.