The published note for this upload describes it plainly as RZD only backwards, and the reversed syllable Dzhr is exactly what you hear. File metadata credits an online voice changer with effects, which matches the slightly processed, clipped quality of the half-second audio. It appeared as a user-uploaded meme soundboard item with only a handful of plays, the kind of micro-clip made for short-form edits rather than any official release. Its staying power comes from the joke itself: a familiar transport name flipped into nonsense is instantly reusable.