The sound comes from a TikTok clip credited to creator lily_malone_, where the line you're literally my dream girl turned a brief reaction into a reusable audio. It spread as users lifted the voice clip for their own videos, pairing it with reveals, transformations and crush edits. The misheard style phrasing what da heck gave it a softer, family friendly feel than stronger swearing, helping it travel across reaction edits and soundboards as a quick expression of stunned admiration.