The sound is linked to Team Fortress 2, the team-based shooter built around distinct character classes, including the flame-wielding Pyro. Fempyro is the community name for a female version of that character, popular in fan art, animations and voice edits. Short battle cries like this one circulate on soundboards because they are instantly recognisable to TF2 players, even when the words are muffled beyond understanding. Creators keep using it for its punchy length and comic aggression, which works just as well in a gameplay highlight as in a short meme video.