Tagged with hololive, Holy Fack circulates online as a short reaction clip taken from VTuber and anime-adjacent streams, where exaggerated English exclamations often become reusable sounds. Its appeal comes from the mispronounced swear, which keeps it light enough for family-friendly edits while still sounding genuinely shocked. Fans clip moments like this, upload them to soundboards, and reuse them across Discord, TikTok and YouTube Shorts. Over time the phrase stopped needing its original context, becoming a standalone cue for disbelief that viewers recognise in under two seconds.