The line comes from Dragon Ball Z, where Vegeta uses a scouter to measure Goku's power level during their first major confrontation and erupts in disbelief at the reading. In the Brazilian Portuguese dub the number became eight thousand, while the English dub made it nine thousand, and both versions fuelled the same internet meme. Clips of the scream spread through forums, remix videos and reaction edits in the late 2000s, becoming shorthand for any unexpectedly huge figure. It survives because the delivery is instantly recognisable and the joke works even for viewers who have never watched the series.