This quote is tied to David Tennant’s time on Doctor Who and was already being repeated by fans in the mid-2000s. Over time, the chant escaped its original TV context and became a standalone meme phrase online because its rhythm is catchy and its nonsense wording is instantly funny. It still shows up in fandom edits, reaction videos and ironic compilations whenever creators want a burst of whimsical chaos instead of a normal punchline.