The exact origin of this short clip is not clearly documented, so it is best understood as an online reaction sound rather than a line tied to a specific show or game. Its appeal comes from a simple, exaggerated premise that needs no setup: lava belongs nowhere near a mouth, so the phrase instantly reads as comic overreaction. On short-form video and meme pages, that kind of instant, self-contained joke travels well, because viewers understand it in less than a second. It continues to appear wherever creators need a fast, dramatic reaction to heat, spice, or a bad decision.