Vegeta is the proud Saiyan prince of Dragon Ball Z, and não acredito, meaning I cannot believe it, fits his refusal to accept defeat or a rival's power. The line comes from the Brazilian Portuguese dub, where his furious, incredulous delivery made it a favourite catchphrase among Portuguese-speaking fans. Shared on soundboards and reused in reaction videos, memes and edits, it now works far beyond Dragon Ball clips, giving creators an instantly recognisable way to express shock, denial and comic frustration in Portuguese.